<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<!-- Compliance Xpressware Instance Document http://www.compliancexpressware.com/  -->
<!-- Version: 1.0.0 --><!-- Creation date:08:57:18 GMT-0700 -->
<!-- Copyright (c) Compliance Xpressware, LLP. All Rights Reserved. -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink">
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DocumentAndEntityInformation" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DocumentAndEntityInformation"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DocumentAndEntityInformation">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DocumentAndEntityInformationAbstract" xlink:label="DocumentAndEntityInformationAbstract" xlink:title="DocumentAndEntityInformationAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DocumentAndEntityInformationAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentType" xlink:label="DocumentType" xlink:title="DocumentType"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DocumentType" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="AmendmentFlag" xlink:title="AmendmentFlag"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AmendmentFlag" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentDescription" xlink:label="AmendmentDescription" xlink:title="AmendmentDescription"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AmendmentDescription" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="DocumentPeriodEndDate" xlink:title="DocumentPeriodEndDate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DocumentPeriodEndDate" use="optional" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_TradingSymbol" xlink:label="TradingSymbol" xlink:title="TradingSymbol"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="TradingSymbol" use="optional" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityRegistrantName" xlink:label="EntityRegistrantName" xlink:title="EntityRegistrantName"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EntityRegistrantName" use="optional" order="11"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="EntityCentralIndexKey" xlink:title="EntityCentralIndexKey"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EntityCentralIndexKey" use="optional" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="CurrentFiscalYearEndDate" xlink:title="CurrentFiscalYearEndDate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CurrentFiscalYearEndDate" use="optional" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityFilerCategory" xlink:label="EntityFilerCategory" xlink:title="EntityFilerCategory"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EntityFilerCategory" use="optional" order="14"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="EntityCommonStockSharesOutstanding" xlink:title="EntityCommonStockSharesOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EntityCommonStockSharesOutstanding" use="optional" order="15"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="EntityCurrentReportingStatus" xlink:title="EntityCurrentReportingStatus"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EntityCurrentReportingStatus" use="optional" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="EntityVoluntaryFilers" xlink:title="EntityVoluntaryFilers"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EntityVoluntaryFilers" use="optional" order="17"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="EntityWellKnownSeasonedIssuer" xlink:title="EntityWellKnownSeasonedIssuer"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EntityWellKnownSeasonedIssuer" use="optional" order="18"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityPublicFloat" xlink:label="EntityPublicFloat" xlink:title="EntityPublicFloat"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EntityPublicFloat" use="optional" order="19"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="DocumentFiscalYearFocus" xlink:title="DocumentFiscalYearFocus"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DocumentFiscalYearFocus" use="optional" order="20"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="DocumentFiscalPeriodFocus" xlink:title="DocumentFiscalPeriodFocus"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DocumentFiscalPeriodFocus" use="optional" order="21"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/BalanceSheet" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_BalanceSheet"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/BalanceSheet">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="StatementOfFinancialPositionAbstract" xlink:title="StatementOfFinancialPositionAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementOfFinancialPositionAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="AssetsAbstract" xlink:title="AssetsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AssetsAbstract" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="AssetsCurrentAbstract" xlink:title="AssetsCurrentAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsAbstract" xlink:to="AssetsCurrentAbstract" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="CashAndCashEquivalentsAtCarryingValue" xlink:title="CashAndCashEquivalentsAtCarryingValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsCurrentAbstract" xlink:to="CashAndCashEquivalentsAtCarryingValue" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="RestrictedCashAndCashEquivalents" xlink:title="RestrictedCashAndCashEquivalents"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsCurrentAbstract" xlink:to="RestrictedCashAndCashEquivalents" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="AccountsReceivableNetCurrent" xlink:title="AccountsReceivableNetCurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsCurrentAbstract" xlink:to="AccountsReceivableNetCurrent" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="PrepaidExpenseCurrent" xlink:title="PrepaidExpenseCurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsCurrentAbstract" xlink:to="PrepaidExpenseCurrent" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="AssetsCurrent" xlink:title="AssetsCurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsCurrentAbstract" xlink:to="AssetsCurrent" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsNoncurrentAbstract" xlink:label="AssetsNoncurrentAbstract" xlink:title="AssetsNoncurrentAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsAbstract" xlink:to="AssetsNoncurrentAbstract" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:label="IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:title="IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsNoncurrentAbstract" xlink:to="IndefiniteLivedIntangibleAssetsExcludingGoodwill" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Assets" xlink:label="Assets" xlink:title="Assets"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AssetsAbstract" xlink:to="Assets" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="LiabilitiesAndStockholdersEquityAbstract" xlink:title="LiabilitiesAndStockholdersEquityAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="LiabilitiesAndStockholdersEquityAbstract" use="optional" order="11"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="LiabilitiesCurrentAbstract" xlink:title="LiabilitiesCurrentAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="LiabilitiesCurrentAbstract" use="optional" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="AccountsPayableAndAccruedLiabilitiesCurrent" xlink:title="AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesCurrentAbstract" xlink:to="AccountsPayableAndAccruedLiabilitiesCurrent" use="optional" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="LiabilitiesCurrent" xlink:title="LiabilitiesCurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesCurrentAbstract" xlink:to="LiabilitiesCurrent" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="14"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="LiabilitiesNoncurrentAbstract" xlink:title="LiabilitiesNoncurrentAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="LiabilitiesNoncurrentAbstract" use="optional" order="15"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredLeaseAbandonmentLiability" xlink:label="DeferredLeaseAbandonmentLiability" xlink:title="DeferredLeaseAbandonmentLiability"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesNoncurrentAbstract" xlink:to="DeferredLeaseAbandonmentLiability" use="optional" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredRevenueLeasesNetNoncurrent" xlink:label="DeferredRevenueLeasesNetNoncurrent" xlink:title="DeferredRevenueLeasesNetNoncurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesNoncurrentAbstract" xlink:to="DeferredRevenueLeasesNetNoncurrent" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="17"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="DerivativeLiabilities" xlink:title="DerivativeLiabilities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesNoncurrentAbstract" xlink:to="DerivativeLiabilities" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="18"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Liabilities" xlink:label="Liabilities" xlink:title="Liabilities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="Liabilities" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="19"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="CommitmentsAndContingencies" xlink:title="CommitmentsAndContingencies"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="CommitmentsAndContingencies" use="optional" order="20"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="StockholdersEquityAbstract" xlink:title="StockholdersEquityAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="StockholdersEquityAbstract" use="optional" order="21"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="PreferredStockValue" xlink:title="PreferredStockValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StockholdersEquityAbstract" xlink:to="PreferredStockValue" use="optional" order="22"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockValue" xlink:label="CommonStockValue" xlink:title="CommonStockValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StockholdersEquityAbstract" xlink:to="CommonStockValue" use="optional" order="23"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="AdditionalPaidInCapital" xlink:title="AdditionalPaidInCapital"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StockholdersEquityAbstract" xlink:to="AdditionalPaidInCapital" use="optional" order="24"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="RetainedEarningsAccumulatedDeficit" xlink:title="RetainedEarningsAccumulatedDeficit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StockholdersEquityAbstract" xlink:to="RetainedEarningsAccumulatedDeficit" use="optional" order="25"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity" xlink:title="StockholdersEquity"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StockholdersEquityAbstract" xlink:to="StockholdersEquity" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="26"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="LiabilitiesAndStockholdersEquity" xlink:title="LiabilitiesAndStockholdersEquity"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="LiabilitiesAndStockholdersEquity" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="27"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/BalanceSheetParenthetical" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_BalanceSheetParenthetical"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/BalanceSheetParenthetical">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="StatementOfFinancialPositionAbstract" xlink:title="StatementOfFinancialPositionAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementOfFinancialPositionAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="PreferredStockParOrStatedValuePerShare" xlink:title="PreferredStockParOrStatedValuePerShare"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PreferredStockParOrStatedValuePerShare" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="PreferredStockSharesAuthorized" xlink:title="PreferredStockSharesAuthorized"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PreferredStockSharesAuthorized" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="PreferredStockSharesIssued" xlink:title="PreferredStockSharesIssued"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PreferredStockSharesIssued" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="PreferredStockSharesOutstanding" xlink:title="PreferredStockSharesOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PreferredStockSharesOutstanding" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="CommonStockParOrStatedValuePerShare" xlink:title="CommonStockParOrStatedValuePerShare"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockParOrStatedValuePerShare" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="CommonStockSharesAuthorized" xlink:title="CommonStockSharesAuthorized"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockSharesAuthorized" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="CommonStockSharesIssued" xlink:title="CommonStockSharesIssued"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockSharesIssued" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="CommonStockSharesOutstanding" xlink:title="CommonStockSharesOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockSharesOutstanding" use="optional" order="8"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/IncomeStatement" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_IncomeStatement"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/IncomeStatement">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="IncomeStatementAbstract" xlink:title="IncomeStatementAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="IncomeStatementAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="RevenuesAbstract" xlink:title="RevenuesAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="RevenuesAbstract" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Revenues" xlink:label="Revenues" xlink:title="Revenues"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RevenuesAbstract" xlink:to="Revenues" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CostOfRevenue" xlink:label="CostOfRevenue" xlink:title="CostOfRevenue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RevenuesAbstract" xlink:to="CostOfRevenue" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GrossProfit" xlink:label="GrossProfit" xlink:title="GrossProfit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RevenuesAbstract" xlink:to="GrossProfit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="OperatingExpensesAbstract" xlink:title="OperatingExpensesAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingExpensesAbstract" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="GeneralAndAdministrativeExpense" xlink:title="GeneralAndAdministrativeExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OperatingExpensesAbstract" xlink:to="GeneralAndAdministrativeExpense" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="ResearchAndDevelopmentExpense" xlink:title="ResearchAndDevelopmentExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OperatingExpensesAbstract" xlink:to="ResearchAndDevelopmentExpense" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="OperatingExpenses" xlink:title="OperatingExpenses"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OperatingExpensesAbstract" xlink:to="OperatingExpenses" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="OperatingIncomeLoss" xlink:title="OperatingIncomeLoss"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingIncomeLoss" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="NonoperatingIncomeExpenseAbstract" xlink:title="NonoperatingIncomeExpenseAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NonoperatingIncomeExpenseAbstract" use="optional" order="10"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ClassOfWarrantOrRightsRevaluation" xlink:label="ClassOfWarrantOrRightsRevaluation" xlink:title="ClassOfWarrantOrRightsRevaluation"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NonoperatingIncomeExpenseAbstract" xlink:to="ClassOfWarrantOrRightsRevaluation" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="11"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="InterestIncomeExpenseNet" xlink:title="InterestIncomeExpenseNet"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NonoperatingIncomeExpenseAbstract" xlink:to="InterestIncomeExpenseNet" use="optional" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="OtherNonoperatingIncomeExpense" xlink:title="OtherNonoperatingIncomeExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NonoperatingIncomeExpenseAbstract" xlink:to="OtherNonoperatingIncomeExpense" use="optional" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="NonoperatingIncomeExpense" xlink:title="NonoperatingIncomeExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NonoperatingIncomeExpenseAbstract" xlink:to="NonoperatingIncomeExpense" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="14"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:title="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="15"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="IncomeTaxExpenseBenefit" xlink:title="IncomeTaxExpenseBenefit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeTaxExpenseBenefit" use="optional" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NetIncomeLoss" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="17"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="EarningsPerShareBasicAndDiluted" xlink:title="EarningsPerShareBasicAndDiluted"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EarningsPerShareBasicAndDiluted" use="optional" order="18"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="WeightedAverageNumberOfDilutedSharesOutstanding" use="optional" order="19"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/CashFlows" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_CashFlows"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/CashFlows">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="StatementOfCashFlowsAbstract" xlink:title="StatementOfCashFlowsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementOfCashFlowsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NetCashProvidedByUsedInOperatingActivitiesAbstract" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="NetIncomeLoss" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="ShareBasedCompensation" xlink:title="ShareBasedCompensation"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="ShareBasedCompensation" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="GainsLossesOnExtinguishmentOfDebt" xlink:title="GainsLossesOnExtinguishmentOfDebt"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="GainsLossesOnExtinguishmentOfDebt" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UnrealizedGainLossOnInvestments" xlink:label="UnrealizedGainLossOnInvestments" xlink:title="UnrealizedGainLossOnInvestments"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="UnrealizedGainLossOnInvestments" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ClassOfWarrantOrRightsRevaluation" xlink:label="ClassOfWarrantOrRightsRevaluation" xlink:title="ClassOfWarrantOrRightsRevaluation"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="ClassOfWarrantOrRightsRevaluation" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="IncreaseDecreaseInOperatingCapitalAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="IncreaseDecreaseInOperatingCapitalAbstract" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="IncreaseDecreaseInAccountsReceivable" xlink:title="IncreaseDecreaseInAccountsReceivable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="IncreaseDecreaseInAccountsReceivable" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:label="IncreaseDecreaseInPrepaidExpense" xlink:title="IncreaseDecreaseInPrepaidExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="IncreaseDecreaseInPrepaidExpense" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:title="IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="11"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="NetCashProvidedByUsedInOperatingActivities" xlink:title="NetCashProvidedByUsedInOperatingActivities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="NetCashProvidedByUsedInOperatingActivities" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NetCashProvidedByUsedInInvestingActivitiesAbstract" use="optional" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:label="ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:title="ProceedsFromSaleAndMaturityOfMarketableSecurities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="ProceedsFromSaleAndMaturityOfMarketableSecurities" use="optional" order="14"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsToAcquireIntangibleAssets" xlink:label="PaymentsToAcquireIntangibleAssets" xlink:title="PaymentsToAcquireIntangibleAssets"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="PaymentsToAcquireIntangibleAssets" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" order="15"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="NetCashProvidedByUsedInInvestingActivities" xlink:title="NetCashProvidedByUsedInInvestingActivities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="NetCashProvidedByUsedInInvestingActivities" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NetCashProvidedByUsedInFinancingActivitiesAbstract" use="optional" order="17"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="ProceedsFromIssuanceOfCommonStock" xlink:title="ProceedsFromIssuanceOfCommonStock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="ProceedsFromIssuanceOfCommonStock" use="optional" order="18"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="IncreaseDecreaseInRestrictedCash" xlink:title="IncreaseDecreaseInRestrictedCash"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="IncreaseDecreaseInRestrictedCash" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="19"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="NetCashProvidedByUsedInFinancingActivities" xlink:title="NetCashProvidedByUsedInFinancingActivities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="NetCashProvidedByUsedInFinancingActivities" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="20"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="CashAndCashEquivalentsPeriodIncreaseDecrease"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CashAndCashEquivalentsPeriodIncreaseDecrease" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" order="21"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="CashAndCashEquivalentsAtCarryingValue" xlink:title="CashAndCashEquivalentsAtCarryingValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CashAndCashEquivalentsAtCarryingValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="22"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="CashAndCashEquivalentsAtCarryingValue_2" xlink:title="CashAndCashEquivalentsAtCarryingValue_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CashAndCashEquivalentsAtCarryingValue_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="23"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="SupplementalCashFlowInformationAbstract" xlink:title="SupplementalCashFlowInformationAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SupplementalCashFlowInformationAbstract" use="optional" order="24"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CashPaidDuringThePeriodAbstract" xlink:label="CashPaidDuringThePeriodAbstract" xlink:title="CashPaidDuringThePeriodAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="SupplementalCashFlowInformationAbstract" xlink:to="CashPaidDuringThePeriodAbstract" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="25"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InterestPaid" xlink:label="InterestPaid" xlink:title="InterestPaid"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="CashPaidDuringThePeriodAbstract" xlink:to="InterestPaid" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="26"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="IncomeTaxesPaid" xlink:title="IncomeTaxesPaid"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="CashPaidDuringThePeriodAbstract" xlink:to="IncomeTaxesPaid" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="27"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherNoncashInvestingAndFinancingItemsAbstract" xlink:label="OtherNoncashInvestingAndFinancingItemsAbstract" xlink:title="OtherNoncashInvestingAndFinancingItemsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherNoncashInvestingAndFinancingItemsAbstract" use="optional" order="28"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharesIssuedForStockOfferingCosts" xlink:label="SharesIssuedForStockOfferingCosts" xlink:title="SharesIssuedForStockOfferingCosts"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharesIssuedForStockOfferingCosts" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="29"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_WarrantLiabilityFairValueOfWarrantsExercised" xlink:label="WarrantLiabilityFairValueOfWarrantsExercised" xlink:title="WarrantLiabilityFairValueOfWarrantsExercised"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="OtherNoncashInvestingAndFinancingItemsAbstract" xlink:to="WarrantLiabilityFairValueOfWarrantsExercised" use="optional" order="30"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/StockholdersEquity" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_StockholdersEquity"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/StockholdersEquity">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementEquityComponentsAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain" xlink:title="EquityComponentDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementEquityComponentsAxis" xlink:to="EquityComponentDomain" use="optional" order="200"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockMember" xlink:label="CommonStockMember" xlink:title="CommonStockMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementEquityComponentsAxis" xlink:to="CommonStockMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="AdditionalPaidInCapitalMember" xlink:title="AdditionalPaidInCapitalMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementEquityComponentsAxis" xlink:to="AdditionalPaidInCapitalMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="RetainedEarningsMember" xlink:title="RetainedEarningsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementEquityComponentsAxis" xlink:to="RetainedEarningsMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="StatementOfStockholdersEquityAbstract" xlink:title="StatementOfStockholdersEquityAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementOfStockholdersEquityAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity" xlink:title="StockholdersEquity"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockholdersEquity" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharesIssued" xlink:label="SharesIssued" xlink:title="SharesIssued"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharesIssued" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="1.1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharesIssuedRegisteredDirectOfferingNetOfOfferingCosts" xlink:label="SharesIssuedRegisteredDirectOfferingNetOfOfferingCosts" xlink:title="SharesIssuedRegisteredDirectOfferingNetOfOfferingCosts"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharesIssuedRegisteredDirectOfferingNetOfOfferingCosts" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharesIssuedRegisteredDirectOfferingNetOfOfferingCostsShares" xlink:label="SharesIssuedRegisteredDirectOfferingNetOfOfferingCostsShares" xlink:title="SharesIssuedRegisteredDirectOfferingNetOfOfferingCostsShares"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharesIssuedRegisteredDirectOfferingNetOfOfferingCostsShares" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2.1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAdjustmentOfWarrants" xlink:label="FairValueAdjustmentOfWarrants" xlink:title="FairValueAdjustmentOfWarrants"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueAdjustmentOfWarrants" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_WarrantsExercised" xlink:label="WarrantsExercised" xlink:title="WarrantsExercised"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="WarrantsExercised" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_WarrantsExercisedShares" xlink:label="WarrantsExercisedShares" xlink:title="WarrantsExercisedShares"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="WarrantsExercisedShares" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="4.1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NetIncomeLoss" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:title="StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodValueShareBasedCompensation" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity_2" xlink:title="StockholdersEquity_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockholdersEquity_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharesIssued" xlink:label="SharesIssued_2" xlink:title="SharesIssued_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharesIssued_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="7.1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:title="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsEarningsPerShareTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="EarningsPerShareTextBlock" xlink:title="EarningsPerShareTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EarningsPerShareTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsOtherAssetsDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsOtherAssetsDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsOtherAssetsDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherAssetsDisclosureTextBlock" xlink:label="OtherAssetsDisclosureTextBlock" xlink:title="OtherAssetsDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherAssetsDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsPrepaidExpensesOtherCurrentAssetsTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsPrepaidExpensesOtherCurrentAssetsTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsPrepaidExpensesOtherCurrentAssetsTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PrepaidExpensesOtherCurrentAssetsTextBlock" xlink:label="PrepaidExpensesOtherCurrentAssetsTextBlock" xlink:title="PrepaidExpensesOtherCurrentAssetsTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PrepaidExpensesOtherCurrentAssetsTextBlock" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsIntangibleAssetsDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsIntangibleAssetsDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsIntangibleAssetsDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IntangibleAssetsDisclosureTextBlock" xlink:label="IntangibleAssetsDisclosureTextBlock" xlink:title="IntangibleAssetsDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IntangibleAssetsDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsAccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsAccountsPayableAndAccruedLiabilitiesDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsAccountsPayableAndAccruedLiabilitiesDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" xlink:label="AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" xlink:title="AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="CommitmentsAndContingenciesDisclosureTextBlock" xlink:title="CommitmentsAndContingenciesDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommitmentsAndContingenciesDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsResearchDevelopmentAndComputerSoftwareDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsResearchDevelopmentAndComputerSoftwareDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsResearchDevelopmentAndComputerSoftwareDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ResearchDevelopmentAndComputerSoftwareDisclosureTextBlock" xlink:label="ResearchDevelopmentAndComputerSoftwareDisclosureTextBlock" xlink:title="ResearchDevelopmentAndComputerSoftwareDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ResearchDevelopmentAndComputerSoftwareDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsIncomeTaxDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ValuationAllowanceByDeferredTaxAssetAxis" xlink:label="ValuationAllowanceByDeferredTaxAssetAxis" xlink:title="ValuationAllowanceByDeferredTaxAssetAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="ValuationAllowanceByDeferredTaxAssetAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetDomain" xlink:label="DeferredTaxAssetDomain" xlink:title="DeferredTaxAssetDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ValuationAllowanceByDeferredTaxAssetAxis" xlink:to="DeferredTaxAssetDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredTaxAssetAmountMember" xlink:label="DeferredTaxAssetAmountMember" xlink:title="DeferredTaxAssetAmountMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DeferredTaxAssetDomain" xlink:to="DeferredTaxAssetAmountMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="IncomeTaxDisclosureTextBlock" xlink:title="IncomeTaxDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeTaxDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsDerivativesAndFairValueTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsDerivativesAndFairValueTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsDerivativesAndFairValueTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativesAndFairValueTextBlock" xlink:label="DerivativesAndFairValueTextBlock" xlink:title="DerivativesAndFairValueTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DerivativesAndFairValueTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="StockholdersEquityNoteDisclosureTextBlock" xlink:title="StockholdersEquityNoteDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockholdersEquityNoteDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsSegmentReportingDisclosureTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="SegmentReportingDisclosureTextBlock" xlink:title="SegmentReportingDisclosureTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SegmentReportingDisclosureTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsFairValueDisclosuresTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="FairValueDisclosuresTextBlock" xlink:title="FairValueDisclosuresTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueDisclosuresTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsSubsequentEventsTextBlock" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsSubsequentEventsTextBlock"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsSubsequentEventsTextBlock">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="SubsequentEventsTextBlock" xlink:title="SubsequentEventsTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SubsequentEventsTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockPolicies" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockPolicies"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlockPolicies">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_BasisOfConsolidationPolicyTextBlock" xlink:label="BasisOfConsolidationPolicyTextBlock" xlink:title="BasisOfConsolidationPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="BasisOfConsolidationPolicyTextBlock" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="UseOfEstimates" xlink:title="UseOfEstimates"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="UseOfEstimates" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SignificantEstimatesPolicyTextBlock" xlink:label="SignificantEstimatesPolicyTextBlock" xlink:title="SignificantEstimatesPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SignificantEstimatesPolicyTextBlock" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:label="FairValueOfFinancialInstrumentsPolicy" xlink:title="FairValueOfFinancialInstrumentsPolicy"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueOfFinancialInstrumentsPolicy" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConcentrationRiskCreditRisk" xlink:label="ConcentrationRiskCreditRisk" xlink:title="ConcentrationRiskCreditRisk"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ConcentrationRiskCreditRisk" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="RevenueRecognitionPolicyTextBlock" xlink:title="RevenueRecognitionPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="RevenueRecognitionPolicyTextBlock" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:label="CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:title="CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy" xlink:label="TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy" xlink:title="TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="TradeAndOtherAccountsReceivableUnbilledReceivablesPolicy" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:label="ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:title="ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" use="optional" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IntangibleAssetsFiniteLivedPolicy" xlink:label="IntangibleAssetsFiniteLivedPolicy" xlink:title="IntangibleAssetsFiniteLivedPolicy"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IntangibleAssetsFiniteLivedPolicy" use="optional" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock" xlink:label="ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock" xlink:title="ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ImpairmentOrDisposalOfLongLivedAssetsIncludingIntangibleAssetsPolicyPolicyTextBlock" use="optional" order="11"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:label="ResearchAndDevelopmentExpensePolicy" xlink:title="ResearchAndDevelopmentExpensePolicy"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ResearchAndDevelopmentExpensePolicy" use="optional" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:label="DerivativesPolicyTextBlock" xlink:title="DerivativesPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DerivativesPolicyTextBlock" use="optional" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommitmentsAndContingenciesPolicyTextBlock" xlink:label="CommitmentsAndContingenciesPolicyTextBlock" xlink:title="CommitmentsAndContingenciesPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommitmentsAndContingenciesPolicyTextBlock" use="optional" order="14"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:title="ShareBasedCompensationOptionAndIncentivePlansPolicy"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationOptionAndIncentivePlansPolicy" use="optional" order="15"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:label="SegmentReportingPolicyPolicyTextBlock" xlink:title="SegmentReportingPolicyPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SegmentReportingPolicyPolicyTextBlock" use="optional" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:title="NewAccountingPronouncementsPolicyPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NewAccountingPronouncementsPolicyPolicyTextBlock" use="optional" order="17"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="IncomeTaxPolicyTextBlock" xlink:title="IncomeTaxPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeTaxPolicyTextBlock" use="optional" order="18"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="PropertyPlantAndEquipmentPolicyTextBlock" xlink:title="PropertyPlantAndEquipmentPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PropertyPlantAndEquipmentPolicyTextBlock" use="optional" order="19"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" xlink:label="PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" xlink:title="PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" use="optional" order="20"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock" xlink:label="BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock" xlink:title="BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="BusinessCombinationsAndOtherPurchaseOfBusinessTransactionsPolicyTextBlock" use="optional" order="21"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="BasisOfAccountingPolicyPolicyTextBlock" xlink:title="BasisOfAccountingPolicyPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="BasisOfAccountingPolicyPolicyTextBlock" use="optional" order="22"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TechnologyBusinessSegmentPolicyTextBlock" xlink:label="TechnologyBusinessSegmentPolicyTextBlock" xlink:title="TechnologyBusinessSegmentPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="TechnologyBusinessSegmentPolicyTextBlock" use="optional" order="23"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ConsultingBusinessSegmentPolicyTextBlock" xlink:label="ConsultingBusinessSegmentPolicyTextBlock" xlink:title="ConsultingBusinessSegmentPolicyTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ConsultingBusinessSegmentPolicyTextBlock" use="optional" order="24"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlockTables" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsEarningsPerShareTextBlockTables"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsEarningsPerShareTextBlockTables">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:title="ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" use="optional" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsAccountsPayableAndAccruedLiabilitiesDisclosureTextBlockTables" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsAccountsPayableAndAccruedLiabilitiesDisclosureTextBlockTables"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsAccountsPayableAndAccruedLiabilitiesDisclosureTextBlockTables">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock" xlink:label="ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock" xlink:title="ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock" use="optional" order="2"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlockTables" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlockTables"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsCommitmentsAndContingenciesDisclosureTextBlockTables">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:label="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:title="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" use="optional" order="3"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlockTables" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsIncomeTaxDisclosureTextBlockTables"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsIncomeTaxDisclosureTextBlockTables">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ValuationAllowanceByDeferredTaxAssetAxis" xlink:label="ValuationAllowanceByDeferredTaxAssetAxis" xlink:title="ValuationAllowanceByDeferredTaxAssetAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="ValuationAllowanceByDeferredTaxAssetAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetDomain" xlink:label="DeferredTaxAssetDomain" xlink:title="DeferredTaxAssetDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ValuationAllowanceByDeferredTaxAssetAxis" xlink:to="DeferredTaxAssetDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredTaxAssetAmountMember" xlink:label="DeferredTaxAssetAmountMember" xlink:title="DeferredTaxAssetAmountMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DeferredTaxAssetDomain" xlink:to="DeferredTaxAssetAmountMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:label="ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:title="ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:label="ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:title="ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" use="optional" order="5"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsDerivativesAndFairValueTextBlockTables" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsDerivativesAndFairValueTextBlockTables"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsDerivativesAndFairValueTextBlockTables">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfDerivativeAssetsAtFairValueTableTextBlock" xlink:label="ScheduleOfDerivativeAssetsAtFairValueTableTextBlock" xlink:title="ScheduleOfDerivativeAssetsAtFairValueTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfDerivativeAssetsAtFairValueTableTextBlock" use="optional" order="6"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlockTables" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlockTables"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsStockholdersEquityNoteDisclosureTextBlockTables">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:label="ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:title="ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:title="ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ScheduleOfNonvestedSharesActivityTableTextBlock" xlink:label="ScheduleOfNonvestedSharesActivityTableTextBlock" xlink:title="ScheduleOfNonvestedSharesActivityTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfNonvestedSharesActivityTableTextBlock" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" xlink:label="DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" xlink:title="DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock" use="optional" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:title="ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" use="optional" order="11"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsSegmentReportingDisclosureTextBlockTables">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:title="ScheduleOfSegmentReportingInformationBySegmentTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ScheduleOfSegmentReportingInformationBySegmentTextBlock" use="optional" order="12"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlockTables" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_NotesToFinancialStatementsFairValueDisclosuresTextBlockTables"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/NotesToFinancialStatementsFairValueDisclosuresTextBlockTables">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueByBalanceSheetGroupingTextBlock" xlink:label="FairValueByBalanceSheetGroupingTextBlock" xlink:title="FairValueByBalanceSheetGroupingTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueByBalanceSheetGroupingTextBlock" use="optional" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" xlink:label="FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" xlink:title="FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock" use="optional" order="14"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureOrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="FinancialInstrumentAxis" xlink:title="FinancialInstrumentAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="FinancialInstrumentAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:title="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="FinancialInstrumentAxis" xlink:to="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DoublelineTotalReturnBondFundMember" xlink:label="DoublelineTotalReturnBondFundMember" xlink:title="DoublelineTotalReturnBondFundMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="DoublelineTotalReturnBondFundMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_VanguardWellesleyIncomeFundMember" xlink:label="VanguardWellesleyIncomeFundMember" xlink:title="VanguardWellesleyIncomeFundMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="VanguardWellesleyIncomeFundMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_VanguardHighYieldCorpInvestorFundMember" xlink:label="VanguardHighYieldCorpInvestorFundMember" xlink:title="VanguardHighYieldCorpInvestorFundMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="VanguardHighYieldCorpInvestorFundMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_VanguardGnmaInvestorFundMember" xlink:label="VanguardGnmaInvestorFundMember" xlink:title="VanguardGnmaInvestorFundMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="VanguardGnmaInvestorFundMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_VanguardShortTermInvestmentGradeInvestorMember" xlink:label="VanguardShortTermInvestmentGradeInvestorMember" xlink:title="VanguardShortTermInvestmentGradeInvestorMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="VanguardShortTermInvestmentGradeInvestorMember" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="RangeAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeAxis" xlink:to="RangeMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="MinimumMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="MaximumMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RemainderMember" xlink:label="RemainderMember" xlink:title="RemainderMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="RemainderMember" use="optional" order="4"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="ApproximationsMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_AdjustmentsMember" xlink:label="AdjustmentsMember" xlink:title="AdjustmentsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="AdjustmentsMember" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:label="CashAndCashEquivalentsAxis" xlink:title="CashAndCashEquivalentsAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="CashAndCashEquivalentsAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:title="RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="CashAndCashEquivalentsAxis" xlink:to="RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CorporateCreditCardAndDailyAchTransactionLimitMember" xlink:label="CorporateCreditCardAndDailyAchTransactionLimitMember" xlink:title="CorporateCreditCardAndDailyAchTransactionLimitMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:to="CorporateCreditCardAndDailyAchTransactionLimitMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="MajorCustomersAxis" xlink:title="MajorCustomersAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="MajorCustomersAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="NameOfMajorCustomerDomain" xlink:title="NameOfMajorCustomerDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="MajorCustomersAxis" xlink:to="NameOfMajorCustomerDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EnecAndFanrProjectsMember" xlink:label="EnecAndFanrProjectsMember" xlink:title="EnecAndFanrProjectsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NameOfMajorCustomerDomain" xlink:to="EnecAndFanrProjectsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_FanrMember" xlink:label="FanrMember" xlink:title="FanrMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NameOfMajorCustomerDomain" xlink:to="FanrMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_LloydRegisterContractMember" xlink:label="LloydRegisterContractMember" xlink:title="LloydRegisterContractMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NameOfMajorCustomerDomain" xlink:to="LloydRegisterContractMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ENECMember" xlink:label="ENECMember" xlink:title="ENECMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NameOfMajorCustomerDomain" xlink:to="ENECMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CustomerContractsMember" xlink:label="CustomerContractsMember" xlink:title="CustomerContractsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NameOfMajorCustomerDomain" xlink:to="CustomerContractsMember" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="10"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_WorkingCapital" xlink:label="WorkingCapital" xlink:title="WorkingCapital"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="WorkingCapital" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity" xlink:title="StockholdersEquity"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockholdersEquity" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Cash" xlink:label="Cash" xlink:title="Cash"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="Cash" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="RetainedEarningsAccumulatedDeficit" xlink:title="RetainedEarningsAccumulatedDeficit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="RetainedEarningsAccumulatedDeficit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ValueOfNuclearScienceAndTechnologyCentre" xlink:label="ValueOfNuclearScienceAndTechnologyCentre" xlink:title="ValueOfNuclearScienceAndTechnologyCentre"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ValueOfNuclearScienceAndTechnologyCentre" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ExtentionOfFuelCycleLength" xlink:label="ExtentionOfFuelCycleLength" xlink:title="ExtentionOfFuelCycleLength"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ExtentionOfFuelCycleLength" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PowerOutputIncreaseBasedOnFuturePotentialReveunes" xlink:label="PowerOutputIncreaseBasedOnFuturePotentialReveunes" xlink:title="PowerOutputIncreaseBasedOnFuturePotentialReveunes"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PowerOutputIncreaseBasedOnFuturePotentialReveunes" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_OperatingCycleLength" xlink:label="OperatingCycleLength" xlink:title="OperatingCycleLength"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingCycleLength" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MaximumIncreaseInPowerOutputBasedOnFutureRevenue" xlink:label="MaximumIncreaseInPowerOutputBasedOnFutureRevenue" xlink:title="MaximumIncreaseInPowerOutputBasedOnFutureRevenue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="MaximumIncreaseInPowerOutputBasedOnFutureRevenue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MetallicFuelPowerUpratePercentage" xlink:label="MetallicFuelPowerUpratePercentage" xlink:title="MetallicFuelPowerUpratePercentage"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="MetallicFuelPowerUpratePercentage" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_OperatingCycleLengthWestinghouseType" xlink:label="OperatingCycleLengthWestinghouseType" xlink:title="OperatingCycleLengthWestinghouseType"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingCycleLengthWestinghouseType" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="11"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashFDICInsuredAmount" xlink:label="CashFDICInsuredAmount" xlink:title="CashFDICInsuredAmount"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CashFDICInsuredAmount" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="CashAndCashEquivalentsAtCarryingValue" xlink:title="CashAndCashEquivalentsAtCarryingValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CashAndCashEquivalentsAtCarryingValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedCashAndInvestments" xlink:label="RestrictedCashAndInvestments" xlink:title="RestrictedCashAndInvestments"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="RestrictedCashAndInvestments" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="14"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_LetterOfCredit" xlink:label="LetterOfCredit" xlink:title="LetterOfCredit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="LetterOfCredit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="15"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MarketableSecurities" xlink:label="MarketableSecurities" xlink:title="MarketableSecurities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="MarketableSecurities" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherInvestments" xlink:label="OtherInvestments" xlink:title="OtherInvestments"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherInvestments" use="optional" order="17"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UnrealizedGainLossOnSecurities" xlink:label="UnrealizedGainLossOnSecurities" xlink:title="UnrealizedGainLossOnSecurities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="UnrealizedGainLossOnSecurities" use="optional" order="18"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherInvestmentsAndSecuritiesAtCost" xlink:label="OtherInvestmentsAndSecuritiesAtCost" xlink:title="OtherInvestmentsAndSecuritiesAtCost"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherInvestmentsAndSecuritiesAtCost" use="optional" order="19"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_UnrealizedGainLossFromFinancialInstitutions" xlink:label="UnrealizedGainLossFromFinancialInstitutions" xlink:title="UnrealizedGainLossFromFinancialInstitutions"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="UnrealizedGainLossFromFinancialInstitutions" use="optional" order="20"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ValuationAllowance" xlink:label="ValuationAllowance" xlink:title="ValuationAllowance"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ValuationAllowance" use="optional" order="21"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MoreLikelyThanNotThreshold" xlink:label="MoreLikelyThanNotThreshold" xlink:title="MoreLikelyThanNotThreshold"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="MoreLikelyThanNotThreshold" use="optional" order="22"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PercentageOfCostOfConsultingFromOneFirm" xlink:label="PercentageOfCostOfConsultingFromOneFirm" xlink:title="PercentageOfCostOfConsultingFromOneFirm"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PercentageOfCostOfConsultingFromOneFirm" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="23"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="ConcentrationRiskPercentage1" xlink:title="ConcentrationRiskPercentage1"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ConcentrationRiskPercentage1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="24"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="FiniteLivedIntangibleAssetUsefulLife" xlink:title="FiniteLivedIntangibleAssetUsefulLife"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FiniteLivedIntangibleAssetUsefulLife" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="25"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="ResearchAndDevelopmentExpense" xlink:title="ResearchAndDevelopmentExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ResearchAndDevelopmentExpense" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="26"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureOtherAssetsDisclosureTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureOtherAssetsDisclosureTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureOtherAssetsDisclosureTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:label="MajorCustomersAxis" xlink:title="MajorCustomersAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="MajorCustomersAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:label="NameOfMajorCustomerDomain" xlink:title="NameOfMajorCustomerDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="MajorCustomersAxis" xlink:to="NameOfMajorCustomerDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EnecAndFanrProjectsMember" xlink:label="EnecAndFanrProjectsMember" xlink:title="EnecAndFanrProjectsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NameOfMajorCustomerDomain" xlink:to="EnecAndFanrProjectsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CustomerContractsMember" xlink:label="CustomerContractsMember" xlink:title="CustomerContractsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NameOfMajorCustomerDomain" xlink:to="CustomerContractsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="AccountsReceivableNet" xlink:title="AccountsReceivableNet"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AccountsReceivableNet" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PortionOfAccountsReceivable" xlink:label="PortionOfAccountsReceivable" xlink:title="PortionOfAccountsReceivable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PortionOfAccountsReceivable" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MajorCustomerRevenuePercentage" xlink:label="MajorCustomerRevenuePercentage" xlink:title="MajorCustomerRevenuePercentage"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="MajorCustomerRevenuePercentage" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_UnbilledContractsReceivable" xlink:label="UnbilledContractsReceivable" xlink:title="UnbilledContractsReceivable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="UnbilledContractsReceivable" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="ForeignCurrencyTransactionGainLossBeforeTax" xlink:title="ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ForeignCurrencyTransactionGainLossBeforeTax" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TravelAndEntertainmentExpense" xlink:label="TravelAndEntertainmentExpense" xlink:title="TravelAndEntertainmentExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="TravelAndEntertainmentExpense" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TravelAndOtherReimbursableExpensesIncludedInAccountsReceivable" xlink:label="TravelAndOtherReimbursableExpensesIncludedInAccountsReceivable" xlink:title="TravelAndOtherReimbursableExpensesIncludedInAccountsReceivable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="TravelAndOtherReimbursableExpensesIncludedInAccountsReceivable" use="optional" order="7"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosurePrepaidExpensesOtherCurrentAssetsTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosurePrepaidExpensesOtherCurrentAssetsTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosurePrepaidExpensesOtherCurrentAssetsTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_LeaseAgreementAxis" xlink:label="LeaseAgreementAxis" xlink:title="LeaseAgreementAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LeaseAgreementAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_LeaseAgreementDomain" xlink:label="LeaseAgreementDomain" xlink:title="LeaseAgreementDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementAxis" xlink:to="LeaseAgreementDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_McleanVirginiaOfficeMember" xlink:label="McleanVirginiaOfficeMember" xlink:title="McleanVirginiaOfficeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementDomain" xlink:to="McleanVirginiaOfficeMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RestonVirginiaOfficeMember" xlink:label="RestonVirginiaOfficeMember" xlink:title="RestonVirginiaOfficeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementDomain" xlink:to="RestonVirginiaOfficeMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SubleaseAgreementMember" xlink:label="SubleaseAgreementMember" xlink:title="SubleaseAgreementMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementDomain" xlink:to="SubleaseAgreementMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="PrepaidExpenseAndOtherAssetsCurrent" xlink:title="PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PrepaidExpenseAndOtherAssetsCurrent" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PrepaidRent" xlink:label="PrepaidRent" xlink:title="PrepaidRent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PrepaidRent" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SecurityDeposit" xlink:label="SecurityDeposit" xlink:title="SecurityDeposit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SecurityDeposit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureIntangibleAssetsDisclosureTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureIntangibleAssetsDisclosureTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureIntangibleAssetsDisclosureTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="RangeAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeAxis" xlink:to="RangeMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="MinimumMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="MaximumMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RemainderMember" xlink:label="RemainderMember" xlink:title="RemainderMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="RemainderMember" use="optional" order="4"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="ApproximationsMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_AdjustmentsMember" xlink:label="AdjustmentsMember" xlink:title="AdjustmentsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="AdjustmentsMember" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="FiniteLivedIntangibleAssetUsefulLife" xlink:title="FiniteLivedIntangibleAssetUsefulLife"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FiniteLivedIntangibleAssetUsefulLife" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CapitalizedCostsForPatents" xlink:label="CapitalizedCostsForPatents" xlink:title="CapitalizedCostsForPatents"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CapitalizedCostsForPatents" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="FiniteLivedIntangibleAssetsNet" xlink:title="FiniteLivedIntangibleAssetsNet"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FiniteLivedIntangibleAssetsNet" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureCommitmentsAndContingenciesDisclosureTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureCommitmentsAndContingenciesDisclosureTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureCommitmentsAndContingenciesDisclosureTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_LeaseAgreementAxis" xlink:label="LeaseAgreementAxis" xlink:title="LeaseAgreementAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LeaseAgreementAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_LeaseAgreementDomain" xlink:label="LeaseAgreementDomain" xlink:title="LeaseAgreementDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementAxis" xlink:to="LeaseAgreementDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MoscowOfficeMember" xlink:label="MoscowOfficeMember" xlink:title="MoscowOfficeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementDomain" xlink:to="MoscowOfficeMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_McleanVirginiaOfficeMember" xlink:label="McleanVirginiaOfficeMember" xlink:title="McleanVirginiaOfficeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementDomain" xlink:to="McleanVirginiaOfficeMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RestonVirginiaOfficeMember" xlink:label="RestonVirginiaOfficeMember" xlink:title="RestonVirginiaOfficeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementDomain" xlink:to="RestonVirginiaOfficeMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_VirginiaOfficeMember" xlink:label="VirginiaOfficeMember" xlink:title="VirginiaOfficeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementDomain" xlink:to="VirginiaOfficeMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SubleaseAgreementMember" xlink:label="SubleaseAgreementMember" xlink:title="SubleaseAgreementMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LeaseAgreementDomain" xlink:to="SubleaseAgreementMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LitigationCaseAxis" xlink:label="LitigationCaseAxis" xlink:title="LitigationCaseAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LitigationCaseAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LitigationCaseTypeDomain" xlink:label="LitigationCaseTypeDomain" xlink:title="LitigationCaseTypeDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LitigationCaseAxis" xlink:to="LitigationCaseTypeDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_FairfaxCountyComplaintOneMember" xlink:label="FairfaxCountyComplaintOneMember" xlink:title="FairfaxCountyComplaintOneMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LitigationCaseTypeDomain" xlink:to="FairfaxCountyComplaintOneMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_FairfaxCountyComplaintTwoMember" xlink:label="FairfaxCountyComplaintTwoMember" xlink:title="FairfaxCountyComplaintTwoMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LitigationCaseTypeDomain" xlink:to="FairfaxCountyComplaintTwoMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_OperatingLeaseTerm" xlink:label="OperatingLeaseTerm" xlink:title="OperatingLeaseTerm"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingLeaseTerm" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="LeaseAndRentalExpense" xlink:title="LeaseAndRentalExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="LeaseAndRentalExpense" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingLeasesIncomeStatementSubleaseRevenue" xlink:label="OperatingLeasesIncomeStatementSubleaseRevenue" xlink:title="OperatingLeasesIncomeStatementSubleaseRevenue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingLeasesIncomeStatementSubleaseRevenue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PresentValueOfTheNegativeCashFlowsFromSuLeaseAgreement" xlink:label="PresentValueOfTheNegativeCashFlowsFromSuLeaseAgreement" xlink:title="PresentValueOfTheNegativeCashFlowsFromSuLeaseAgreement"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PresentValueOfTheNegativeCashFlowsFromSuLeaseAgreement" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FeesAndCommissionsOther" xlink:label="FeesAndCommissionsOther" xlink:title="FeesAndCommissionsOther"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FeesAndCommissionsOther" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:label="LossContingencyEstimateOfPossibleLoss" xlink:title="LossContingencyEstimateOfPossibleLoss"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="LossContingencyEstimateOfPossibleLoss" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredLeaseAbandonmentLiability" xlink:label="DeferredLeaseAbandonmentLiability" xlink:title="DeferredLeaseAbandonmentLiability"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredLeaseAbandonmentLiability" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredLeaseAbandonmentLiabilityShortTerm" xlink:label="DeferredLeaseAbandonmentLiabilityShortTerm" xlink:title="DeferredLeaseAbandonmentLiabilityShortTerm"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredLeaseAbandonmentLiabilityShortTerm" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredRentCredit" xlink:label="DeferredRentCredit" xlink:title="DeferredRentCredit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredRentCredit" use="optional" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingLeasesRentExpenseNet" xlink:label="OperatingLeasesRentExpenseNet" xlink:title="OperatingLeasesRentExpenseNet"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingLeasesRentExpenseNet" use="optional" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals" xlink:label="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals" xlink:title="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="11"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue" xlink:label="LossContingencyDamagesSoughtValue" xlink:title="LossContingencyDamagesSoughtValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="LossContingencyDamagesSoughtValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LegalFees" xlink:label="LegalFees" xlink:title="LegalFees"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="LegalFees" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="13"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureResearchDevelopmentAndComputerSoftwareDisclosureTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureResearchDevelopmentAndComputerSoftwareDisclosureTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureResearchDevelopmentAndComputerSoftwareDisclosureTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:label="LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:title="LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:label="LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:title="LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:to="LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TaskOrderOneWithTexasAmUniversityMember" xlink:label="TaskOrderOneWithTexasAmUniversityMember" xlink:title="TaskOrderOneWithTexasAmUniversityMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:to="TaskOrderOneWithTexasAmUniversityMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ResearchAndDevelopmentCosts" xlink:label="ResearchAndDevelopmentCosts" xlink:title="ResearchAndDevelopmentCosts"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ResearchAndDevelopmentCosts" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ConsultingAgreementMontlyPayments" xlink:label="ConsultingAgreementMontlyPayments" xlink:title="ConsultingAgreementMontlyPayments"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ConsultingAgreementMontlyPayments" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_AmountDueUponExecution" xlink:label="AmountDueUponExecution" xlink:title="AmountDueUponExecution"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AmountDueUponExecution" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherCommitment" xlink:label="OtherCommitment" xlink:title="OtherCommitment"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherCommitment" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsToAcquireInProcessResearchAndDevelopment" xlink:label="PaymentsToAcquireInProcessResearchAndDevelopment" xlink:title="PaymentsToAcquireInProcessResearchAndDevelopment"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PaymentsToAcquireInProcessResearchAndDevelopment" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherCommitmentDueInNextTwelveMonths" xlink:label="OtherCommitmentDueInNextTwelveMonths" xlink:title="OtherCommitmentDueInNextTwelveMonths"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherCommitmentDueInNextTwelveMonths" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherResearchAndDevelopmentExpense" xlink:label="OtherResearchAndDevelopmentExpense" xlink:title="OtherResearchAndDevelopmentExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherResearchAndDevelopmentExpense" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IfeUmbrellaServiceAgreement" xlink:label="IfeUmbrellaServiceAgreement" xlink:title="IfeUmbrellaServiceAgreement"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IfeUmbrellaServiceAgreement" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="8"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureIncomeTaxDisclosureTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureIncomeTaxDisclosureTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureIncomeTaxDisclosureTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ValuationAllowanceByDeferredTaxAssetAxis" xlink:label="ValuationAllowanceByDeferredTaxAssetAxis" xlink:title="ValuationAllowanceByDeferredTaxAssetAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="ValuationAllowanceByDeferredTaxAssetAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetDomain" xlink:label="DeferredTaxAssetDomain" xlink:title="DeferredTaxAssetDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ValuationAllowanceByDeferredTaxAssetAxis" xlink:to="DeferredTaxAssetDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredTaxAssetAmountMember" xlink:label="DeferredTaxAssetAmountMember" xlink:title="DeferredTaxAssetAmountMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DeferredTaxAssetDomain" xlink:to="DeferredTaxAssetAmountMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:title="EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="DeferredTaxAssetsOperatingLossCarryforwards" xlink:title="DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredTaxAssetsOperatingLossCarryforwards" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ValuationAllowance" xlink:label="ValuationAllowance" xlink:title="ValuationAllowance"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ValuationAllowance" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:label="ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:title="ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ValuationAllowanceDeferredTaxAssetChangeInAmount" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsAndExcessTaxBenefitFromSharebasedCompensation" xlink:label="ProceedsAndExcessTaxBenefitFromSharebasedCompensation" xlink:title="ProceedsAndExcessTaxBenefitFromSharebasedCompensation"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ProceedsAndExcessTaxBenefitFromSharebasedCompensation" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureDerivativesAndFairValueTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureDerivativesAndFairValueTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureDerivativesAndFairValueTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherNoncashIncome" xlink:label="OtherNoncashIncome" xlink:title="OtherNoncashIncome"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherNoncashIncome" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureStockholdersEquityNoteDisclosureTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureStockholdersEquityNoteDisclosureTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureStockholdersEquityNoteDisclosureTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="AwardTypeAxis" xlink:title="AwardTypeAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="AwardTypeAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AwardTypeAxis" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockCompensationPlanMember" xlink:label="StockCompensationPlanMember" xlink:title="StockCompensationPlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="StockCompensationPlanMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MaximumRestrictedSharesGrantedMember" xlink:label="MaximumRestrictedSharesGrantedMember" xlink:title="MaximumRestrictedSharesGrantedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="MaximumRestrictedSharesGrantedMember" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MaximumNumberOfSharesInRespectToStockOptionsMember" xlink:label="MaximumNumberOfSharesInRespectToStockOptionsMember" xlink:title="MaximumNumberOfSharesInRespectToStockOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="MaximumNumberOfSharesInRespectToStockOptionsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MaximumRestrictedSharesGrantedToOnePersonMember" xlink:label="MaximumRestrictedSharesGrantedToOnePersonMember" xlink:title="MaximumRestrictedSharesGrantedToOnePersonMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="MaximumRestrictedSharesGrantedToOnePersonMember" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_StockOptionsVestedMember" xlink:label="StockOptionsVestedMember" xlink:title="StockOptionsVestedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="StockOptionsVestedMember" use="optional" order="9"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_StockbasedCompensationMember" xlink:label="StockbasedCompensationMember" xlink:title="StockbasedCompensationMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="StockbasedCompensationMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="RestrictedStockMember" xlink:title="RestrictedStockMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="RestrictedStockMember" use="optional" order="11"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="RestrictedStockUnitsRSUMember" xlink:title="RestrictedStockUnitsRSUMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="RestrictedStockUnitsRSUMember" use="optional" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_WarrantMember" xlink:label="WarrantMember" xlink:title="WarrantMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="WarrantMember" use="optional" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="EmployeeStockOptionMember" xlink:title="EmployeeStockOptionMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="EmployeeStockOptionMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_StockAndStockEquivalentsMember" xlink:label="StockAndStockEquivalentsMember" xlink:title="StockAndStockEquivalentsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="StockAndStockEquivalentsMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OptionMember" xlink:label="OptionMember" xlink:title="OptionMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="OptionMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroZeroSixStockPlanMember" xlink:label="TwoZeroZeroSixStockPlanMember" xlink:title="TwoZeroZeroSixStockPlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="TwoZeroZeroSixStockPlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="15"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveEquityIncentivePlanMember" xlink:label="TwoZeroOneFiveEquityIncentivePlanMember" xlink:title="TwoZeroOneFiveEquityIncentivePlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="TwoZeroOneFiveEquityIncentivePlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="RangeAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeAxis" xlink:to="RangeMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="MinimumMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="MaximumMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RemainderMember" xlink:label="RemainderMember" xlink:title="RemainderMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RangeMember" xlink:to="RemainderMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EquityTransactionAxis" xlink:label="EquityTransactionAxis" xlink:title="EquityTransactionAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="EquityTransactionAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EquityTransactionDomain" xlink:label="EquityTransactionDomain" xlink:title="EquityTransactionDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionAxis" xlink:to="EquityTransactionDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuanceOfTwoFiveFiveTwoZeroTwoNonqualifiedOneZeroYearOptionsMember" xlink:label="IssuanceOfTwoFiveFiveTwoZeroTwoNonqualifiedOneZeroYearOptionsMember" xlink:title="IssuanceOfTwoFiveFiveTwoZeroTwoNonqualifiedOneZeroYearOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuanceOfTwoFiveFiveTwoZeroTwoNonqualifiedOneZeroYearOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="13"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuanceOfFourFiveOneSevenTwoFiveNineNonqualifiedFiveOneZeroYearOptionsMember" xlink:label="IssuanceOfFourFiveOneSevenTwoFiveNineNonqualifiedFiveOneZeroYearOptionsMember" xlink:title="IssuanceOfFourFiveOneSevenTwoFiveNineNonqualifiedFiveOneZeroYearOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuanceOfFourFiveOneSevenTwoFiveNineNonqualifiedFiveOneZeroYearOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="20"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuanceOfFourSixFourFourFourEightNonqualifiedThreeOneZeroYearOptionsMember" xlink:label="IssuanceOfFourSixFourFourFourEightNonqualifiedThreeOneZeroYearOptionsMember" xlink:title="IssuanceOfFourSixFourFourFourEightNonqualifiedThreeOneZeroYearOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuanceOfFourSixFourFourFourEightNonqualifiedThreeOneZeroYearOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="21"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_UnregisteredSecuritiesMember" xlink:label="UnregisteredSecuritiesMember" xlink:title="UnregisteredSecuritiesMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="UnregisteredSecuritiesMember" use="optional" order="15"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RegisteredDirectOfferingAndOutstandingWarrantsMember" xlink:label="RegisteredDirectOfferingAndOutstandingWarrantsMember" xlink:title="RegisteredDirectOfferingAndOutstandingWarrantsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="RegisteredDirectOfferingAndOutstandingWarrantsMember" use="optional" order="16"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MayFiveTwoZeroOneFourStockOptionsGrantedMember" xlink:label="MayFiveTwoZeroOneFourStockOptionsGrantedMember" xlink:title="MayFiveTwoZeroOneFourStockOptionsGrantedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="MayFiveTwoZeroOneFourStockOptionsGrantedMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="18"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NovemberOneTwoTwoZeroOneFourOfferingMember" xlink:label="NovemberOneTwoTwoZeroOneFourOfferingMember" xlink:title="NovemberOneTwoTwoZeroOneFourOfferingMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="NovemberOneTwoTwoZeroOneFourOfferingMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuedToInvestorsOnJulyTwoEightTwoZeroOneZeroMember" xlink:label="IssuedToInvestorsOnJulyTwoEightTwoZeroOneZeroMember" xlink:title="IssuedToInvestorsOnJulyTwoEightTwoZeroOneZeroMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuedToInvestorsOnJulyTwoEightTwoZeroOneZeroMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuedToInvestorsOnOctoberTwoFiveTwoZeroOneThreeMember" xlink:label="IssuedToInvestorsOnOctoberTwoFiveTwoZeroOneThreeMember" xlink:title="IssuedToInvestorsOnOctoberTwoFiveTwoZeroOneThreeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuedToInvestorsOnOctoberTwoFiveTwoZeroOneThreeMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuedToInvestorsOnNovemberOneSevenTwoZeroOneFourMember" xlink:label="IssuedToInvestorsOnNovemberOneSevenTwoZeroOneFourMember" xlink:title="IssuedToInvestorsOnNovemberOneSevenTwoZeroOneFourMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuedToInvestorsOnNovemberOneSevenTwoZeroOneFourMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroZeroSixStockPlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroOneFiveEquityIncentivePlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveShorttermNonqualifiedOptionGrantsMember" xlink:label="TwoZeroOneFiveShorttermNonqualifiedOptionGrantsMember" xlink:title="TwoZeroOneFiveShorttermNonqualifiedOptionGrantsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroOneFiveShorttermNonqualifiedOptionGrantsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveLongtermIncentiveOptionGrantsMember" xlink:label="TwoZeroOneFiveLongtermIncentiveOptionGrantsMember" xlink:title="TwoZeroOneFiveLongtermIncentiveOptionGrantsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroOneFiveLongtermIncentiveOptionGrantsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_AtmOfferingMember" xlink:label="AtmOfferingMember" xlink:title="AtmOfferingMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="AtmOfferingMember" use="optional" order="12"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShorttermNonqualifiedStockOptionsMember" xlink:label="ShorttermNonqualifiedStockOptionsMember" xlink:title="ShorttermNonqualifiedStockOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="ShorttermNonqualifiedStockOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="22"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_LongtermNonqualifiedStockOptionsMember" xlink:label="LongtermNonqualifiedStockOptionsMember" xlink:title="LongtermNonqualifiedStockOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="LongtermNonqualifiedStockOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="23"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveStockEquityPlanMember" xlink:label="TwoZeroOneFiveStockEquityPlanMember" xlink:title="TwoZeroOneFiveStockEquityPlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroOneFiveStockEquityPlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="24"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EquityPurchaseAgreementMember" xlink:label="EquityPurchaseAgreementMember" xlink:title="EquityPurchaseAgreementMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="EquityPurchaseAgreementMember" use="optional" order="25"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="RelatedPartyTransactionsByRelatedPartyAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain" xlink:title="RelatedPartyDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="RelatedPartyDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ChiefExecutiveOfficerMember" xlink:label="ChiefExecutiveOfficerMember" xlink:title="ChiefExecutiveOfficerMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RelatedPartyDomain" xlink:to="ChiefExecutiveOfficerMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DirectorMember" xlink:label="DirectorMember" xlink:title="DirectorMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RelatedPartyDomain" xlink:to="DirectorMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EmployeesAndConsultantsMember" xlink:label="EmployeesAndConsultantsMember" xlink:title="EmployeesAndConsultantsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RelatedPartyDomain" xlink:to="EmployeesAndConsultantsMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DirectorsMember" xlink:label="DirectorsMember" xlink:title="DirectorsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RelatedPartyDomain" xlink:to="DirectorsMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_AspireCapitalMember" xlink:label="AspireCapitalMember" xlink:title="AspireCapitalMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RelatedPartyDomain" xlink:to="AspireCapitalMember" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="CommonStockSharesAuthorized" xlink:title="CommonStockSharesAuthorized"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockSharesAuthorized" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="CommonStockSharesOutstanding" xlink:title="CommonStockSharesOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockSharesOutstanding" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CommonStockReservedForIssuance" xlink:label="CommonStockReservedForIssuance" xlink:title="CommonStockReservedForIssuance"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockReservedForIssuance" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="ClassOfWarrantOrRightOutstanding" xlink:title="ClassOfWarrantOrRightOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ClassOfWarrantOrRightOutstanding" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuedButUnvestedRestrictedStock" xlink:label="IssuedButUnvestedRestrictedStock" xlink:title="IssuedButUnvestedRestrictedStock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IssuedButUnvestedRestrictedStock" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TotalStockAndStockEquivalentsOutstanding" xlink:label="TotalStockAndStockEquivalentsOutstanding" xlink:title="TotalStockAndStockEquivalentsOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="TotalStockAndStockEquivalentsOutstanding" use="optional" order="8"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="CommonStockCapitalSharesReservedForFutureIssuance" xlink:title="CommonStockCapitalSharesReservedForFutureIssuance"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockCapitalSharesReservedForFutureIssuance" use="optional" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockOptionPlanExpense" xlink:label="StockOptionPlanExpense" xlink:title="StockOptionPlanExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockOptionPlanExpense" use="optional" order="11"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NonQualifiedStockOptions" xlink:label="NonQualifiedStockOptions" xlink:title="NonQualifiedStockOptions"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NonQualifiedStockOptions" use="optional" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" use="optional" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" use="optional" order="14"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" use="optional" order="15"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue" use="optional" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue" use="optional" order="17"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_UnrecognizedCompensationCosts" xlink:label="UnrecognizedCompensationCosts" xlink:title="UnrecognizedCompensationCosts"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="UnrecognizedCompensationCosts" use="optional" order="18"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ExpectedCompensationCost" xlink:label="ExpectedCompensationCost" xlink:title="ExpectedCompensationCost"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ExpectedCompensationCost" use="optional" order="19"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_WeightedAverageRecognitionPeriod" xlink:label="WeightedAverageRecognitionPeriod" xlink:title="WeightedAverageRecognitionPeriod"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="WeightedAverageRecognitionPeriod" use="optional" order="20"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RestrictedStockGrantsEstimatedForfeitureAmount" xlink:label="RestrictedStockGrantsEstimatedForfeitureAmount" xlink:title="RestrictedStockGrantsEstimatedForfeitureAmount"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="RestrictedStockGrantsEstimatedForfeitureAmount" use="optional" order="21"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="ShareBasedCompensation" xlink:title="ShareBasedCompensation"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensation" use="optional" order="22"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TotalFundraisingLimit" xlink:label="TotalFundraisingLimit" xlink:title="TotalFundraisingLimit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="TotalFundraisingLimit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="23"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EquityIssuanceAmountPerShare" xlink:label="EquityIssuanceAmountPerShare" xlink:title="EquityIssuanceAmountPerShare"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EquityIssuanceAmountPerShare" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="24"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="CommonStockSharesIssued" xlink:title="CommonStockSharesIssued"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockSharesIssued" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="25"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="ProceedsFromIssuanceOfCommonStock" xlink:title="ProceedsFromIssuanceOfCommonStock"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ProceedsFromIssuanceOfCommonStock" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="26"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CommonStockAndWarrantsSold" xlink:label="CommonStockAndWarrantsSold" xlink:title="CommonStockAndWarrantsSold"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockAndWarrantsSold" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="27"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NasdaqTwoZeroRule" xlink:label="NasdaqTwoZeroRule" xlink:title="NasdaqTwoZeroRule"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NasdaqTwoZeroRule" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="28"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockOtherSharesOutstanding" xlink:label="CommonStockOtherSharesOutstanding" xlink:title="CommonStockOtherSharesOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockOtherSharesOutstanding" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="29"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PercentageOfTheFairMarketValueOfTheCommonStockForOptionExercisePrice" xlink:label="PercentageOfTheFairMarketValueOfTheCommonStockForOptionExercisePrice" xlink:title="PercentageOfTheFairMarketValueOfTheCommonStockForOptionExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PercentageOfTheFairMarketValueOfTheCommonStockForOptionExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="30"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativeTermOfContract" xlink:label="DerivativeTermOfContract" xlink:title="DerivativeTermOfContract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DerivativeTermOfContract" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="31"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharesOfCommonStockToBePurchasedByFixedCombination" xlink:label="SharesOfCommonStockToBePurchasedByFixedCombination" xlink:title="SharesOfCommonStockToBePurchasedByFixedCombination"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharesOfCommonStockToBePurchasedByFixedCombination" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="32"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PurchasePriceOfFixedCombination" xlink:label="PurchasePriceOfFixedCombination" xlink:title="PurchasePriceOfFixedCombination"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PurchasePriceOfFixedCombination" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="33"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentWarrantsExercisePrice" xlink:label="InvestmentWarrantsExercisePrice" xlink:title="InvestmentWarrantsExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="InvestmentWarrantsExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="34"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MaximumCommonStockOwnershipToBeEligibleForExerciseOfWarrants" xlink:label="MaximumCommonStockOwnershipToBeEligibleForExerciseOfWarrants" xlink:title="MaximumCommonStockOwnershipToBeEligibleForExerciseOfWarrants"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="MaximumCommonStockOwnershipToBeEligibleForExerciseOfWarrants" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="35"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NetProceedsFromTheOfferingReceivedAfterPaymentsOfFeesAndExpenses" xlink:label="NetProceedsFromTheOfferingReceivedAfterPaymentsOfFeesAndExpenses" xlink:title="NetProceedsFromTheOfferingReceivedAfterPaymentsOfFeesAndExpenses"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NetProceedsFromTheOfferingReceivedAfterPaymentsOfFeesAndExpenses" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="36"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalOther" xlink:label="AdjustmentsToAdditionalPaidInCapitalOther" xlink:title="AdjustmentsToAdditionalPaidInCapitalOther"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AdjustmentsToAdditionalPaidInCapitalOther" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="37"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromIssuanceOfWarrants" xlink:label="ProceedsFromIssuanceOfWarrants" xlink:title="ProceedsFromIssuanceOfWarrants"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ProceedsFromIssuanceOfWarrants" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="38"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="39"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="40"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="41"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="42"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_StrikePrice" xlink:label="StrikePrice" xlink:title="StrikePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StrikePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="43"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="44"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompenationWeightedAverageFairValue" xlink:label="ShareBasedCompenationWeightedAverageFairValue" xlink:title="ShareBasedCompenationWeightedAverageFairValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompenationWeightedAverageFairValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="45"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_FairMarketValueOnMeasurementDate" xlink:label="FairMarketValueOnMeasurementDate" xlink:title="FairMarketValueOnMeasurementDate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairMarketValueOnMeasurementDate" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="46"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PreVestingForfeitureRate" xlink:label="PreVestingForfeitureRate" xlink:title="PreVestingForfeitureRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PreVestingForfeitureRate" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="47"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="48"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAssumptionsExpectedDividendPayments" xlink:label="FairValueAssumptionsExpectedDividendPayments" xlink:title="FairValueAssumptionsExpectedDividendPayments"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueAssumptionsExpectedDividendPayments" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="49"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="50"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharesOfCommonStockLimitOnStockOptions" xlink:label="SharesOfCommonStockLimitOnStockOptions" xlink:title="SharesOfCommonStockLimitOnStockOptions"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharesOfCommonStockLimitOnStockOptions" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="51"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CommonStockPurchaseCommitmentAmount" xlink:label="CommonStockPurchaseCommitmentAmount" xlink:title="CommonStockPurchaseCommitmentAmount"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockPurchaseCommitmentAmount" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="52"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CommonStockPurchaseAmountPerBusinessDay" xlink:label="CommonStockPurchaseAmountPerBusinessDay" xlink:title="CommonStockPurchaseAmountPerBusinessDay"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockPurchaseAmountPerBusinessDay" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="53"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CommonStockPurchaseAmountPerBusinessDayValue" xlink:label="CommonStockPurchaseAmountPerBusinessDayValue" xlink:title="CommonStockPurchaseAmountPerBusinessDayValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockPurchaseAmountPerBusinessDayValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="54"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PercentageOfAggregateSharesOfTheCompanySCommonStockToBePurchased" xlink:label="PercentageOfAggregateSharesOfTheCompanySCommonStockToBePurchased" xlink:title="PercentageOfAggregateSharesOfTheCompanySCommonStockToBePurchased"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PercentageOfAggregateSharesOfTheCompanySCommonStockToBePurchased" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="55"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_PercentageOfPurchasePricePerSharePursuantToVwap" xlink:label="PercentageOfPurchasePricePerSharePursuantToVwap" xlink:title="PercentageOfPurchasePricePerSharePursuantToVwap"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PercentageOfPurchasePricePerSharePursuantToVwap" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="56"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesOther" xlink:label="StockIssuedDuringPeriodSharesOther" xlink:title="StockIssuedDuringPeriodSharesOther"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodSharesOther" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="57"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueOther" xlink:label="StockIssuedDuringPeriodValueOther" xlink:title="StockIssuedDuringPeriodValueOther"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodValueOther" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="58"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureSubsequentEventsTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureSubsequentEventsTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureSubsequentEventsTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="SubsequentEventTypeAxis" xlink:title="SubsequentEventTypeAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="SubsequentEventTypeAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="SubsequentEventTypeDomain" xlink:title="SubsequentEventTypeDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="SubsequentEventTypeAxis" xlink:to="SubsequentEventTypeDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="SubsequentEventMember" xlink:title="SubsequentEventMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="SubsequentEventTypeDomain" xlink:to="SubsequentEventMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="RelatedPartyTransactionsByRelatedPartyAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain" xlink:title="RelatedPartyDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="RelatedPartyDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_AspireCapitalMember" xlink:label="AspireCapitalMember" xlink:title="AspireCapitalMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="RelatedPartyDomain" xlink:to="AspireCapitalMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="StockIssuedDuringPeriodValueNewIssues" xlink:title="StockIssuedDuringPeriodValueNewIssues"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodValueNewIssues" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="StockIssuedDuringPeriodSharesNewIssues" xlink:title="StockIssuedDuringPeriodSharesNewIssues"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodSharesNewIssues" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ExpectedPaymentsForJointEvaluationProjectPlan" xlink:label="ExpectedPaymentsForJointEvaluationProjectPlan" xlink:title="ExpectedPaymentsForJointEvaluationProjectPlan"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ExpectedPaymentsForJointEvaluationProjectPlan" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherCommitmentsDescription" xlink:label="OtherCommitmentsDescription" xlink:title="OtherCommitmentsDescription"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherCommitmentsDescription" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfEarningsPerShareBasicAndDilutedTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfEarningsPerShareBasicAndDilutedTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfEarningsPerShareBasicAndDilutedTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NumeratorAbstract" xlink:label="NumeratorAbstract" xlink:title="NumeratorAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="NumeratorAbstract" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NumeratorAbstract" xlink:to="NetIncomeLoss" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DenominatorAbstract" xlink:label="DenominatorAbstract" xlink:title="DenominatorAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DenominatorAbstract" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DenominatorAbstract" xlink:to="WeightedAverageNumberOfDilutedSharesOutstanding" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="EarningsPerShareBasicAndDiluted" xlink:title="EarningsPerShareBasicAndDiluted"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DenominatorAbstract" xlink:to="EarningsPerShareBasicAndDiluted" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsPayableTradeCurrentAndNoncurrent" xlink:label="AccountsPayableTradeCurrentAndNoncurrent" xlink:title="AccountsPayableTradeCurrentAndNoncurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AccountsPayableTradeCurrentAndNoncurrent" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities" xlink:label="AccruedLiabilitiesAndOtherLiabilities" xlink:title="AccruedLiabilitiesAndOtherLiabilities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AccruedLiabilitiesAndOtherLiabilities" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent" xlink:label="EmployeeRelatedLiabilitiesCurrentAndNoncurrent" xlink:title="EmployeeRelatedLiabilitiesCurrentAndNoncurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="EmployeeRelatedLiabilitiesCurrentAndNoncurrent" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="AccountsPayableAndAccruedLiabilitiesCurrent" xlink:title="AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="AccountsPayableAndAccruedLiabilitiesCurrent" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:title="OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingLeasesFutureMinimumPaymentsDueCurrent" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:title="OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingLeasesFutureMinimumPaymentsDueInTwoYears" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:title="OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingLeasesFutureMinimumPaymentsDueInThreeYears" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="OperatingLeasesFutureMinimumPaymentsDue" xlink:title="OperatingLeasesFutureMinimumPaymentsDue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OperatingLeasesFutureMinimumPaymentsDue" use="optional" order="4"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ValuationAllowanceByDeferredTaxAssetAxis" xlink:label="ValuationAllowanceByDeferredTaxAssetAxis" xlink:title="ValuationAllowanceByDeferredTaxAssetAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="ValuationAllowanceByDeferredTaxAssetAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetDomain" xlink:label="DeferredTaxAssetDomain" xlink:title="DeferredTaxAssetDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ValuationAllowanceByDeferredTaxAssetAxis" xlink:to="DeferredTaxAssetDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredTaxAssetAmountMember" xlink:label="DeferredTaxAssetAmountMember" xlink:title="DeferredTaxAssetAmountMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DeferredTaxAssetDomain" xlink:to="DeferredTaxAssetAmountMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementScenarioAxis" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementScenarioAxis" xlink:to="ScenarioUnspecifiedDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ApproximationsMember" xlink:label="ApproximationsMember" xlink:title="ApproximationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ApproximationsMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="ScenarioPreviouslyReportedMember" xlink:title="ScenarioPreviouslyReportedMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioPreviouslyReportedMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="RestatementAdjustmentMember" xlink:title="RestatementAdjustmentMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="RestatementAdjustmentMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioActualMember" xlink:label="ScenarioActualMember" xlink:title="ScenarioActualMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ScenarioUnspecifiedDomain" xlink:to="ScenarioActualMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="7"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CapitalizedStartUpCosts" xlink:label="CapitalizedStartUpCosts" xlink:title="CapitalizedStartUpCosts"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CapitalizedStartUpCosts" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetsOtherLossCarryforwards" xlink:label="DeferredTaxAssetsOtherLossCarryforwards" xlink:title="DeferredTaxAssetsOtherLossCarryforwards"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredTaxAssetsOtherLossCarryforwards" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredTaxAssetsShareBasedCompensation" xlink:label="DeferredTaxAssetsShareBasedCompensation" xlink:title="DeferredTaxAssetsShareBasedCompensation"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredTaxAssetsShareBasedCompensation" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities" xlink:label="DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities" xlink:title="DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic" xlink:label="DeferredTaxAssetsOperatingLossCarryforwardsDomestic" xlink:title="DeferredTaxAssetsOperatingLossCarryforwardsDomestic"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredTaxAssetsOperatingLossCarryforwardsDomestic" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="DeferredTaxAssetsValuationAllowance" xlink:title="DeferredTaxAssetsValuationAllowance"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredTaxAssetsValuationAllowance" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:label="DeferredTaxAssetsNet" xlink:title="DeferredTaxAssetsNet"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DeferredTaxAssetsNet" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ValuationAllowanceByDeferredTaxAssetAxis" xlink:label="ValuationAllowanceByDeferredTaxAssetAxis" xlink:title="ValuationAllowanceByDeferredTaxAssetAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="ValuationAllowanceByDeferredTaxAssetAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetDomain" xlink:label="DeferredTaxAssetDomain" xlink:title="DeferredTaxAssetDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ValuationAllowanceByDeferredTaxAssetAxis" xlink:to="DeferredTaxAssetDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_DeferredTaxAssetAmountMember" xlink:label="DeferredTaxAssetAmountMember" xlink:title="DeferredTaxAssetAmountMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="DeferredTaxAssetDomain" xlink:to="DeferredTaxAssetAmountMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="CurrentFederalTaxExpenseBenefit" xlink:title="CurrentFederalTaxExpenseBenefit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CurrentFederalTaxExpenseBenefit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="CurrentStateAndLocalTaxExpenseBenefit" xlink:title="CurrentStateAndLocalTaxExpenseBenefit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CurrentStateAndLocalTaxExpenseBenefit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherTaxExpenseBenefit" xlink:label="OtherTaxExpenseBenefit" xlink:title="OtherTaxExpenseBenefit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="OtherTaxExpenseBenefit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxCreditsOther" xlink:label="IncomeTaxReconciliationTaxCreditsOther" xlink:title="IncomeTaxReconciliationTaxCreditsOther"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeTaxReconciliationTaxCreditsOther" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost" xlink:label="IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost" xlink:title="IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:title="IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="IncomeTaxExpenseBenefit" xlink:title="IncomeTaxExpenseBenefit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeTaxExpenseBenefit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="7"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfDerivativeAssetsAtFairValueTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfDerivativeAssetsAtFairValueTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfDerivativeAssetsAtFairValueTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="AwardTypeAxis" xlink:title="AwardTypeAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="AwardTypeAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AwardTypeAxis" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_WarrantMember" xlink:label="WarrantMember" xlink:title="WarrantMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="WarrantMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet" xlink:label="DerivativeAssetsLiabilitiesAtFairValueNet" xlink:title="DerivativeAssetsLiabilitiesAtFairValueNet"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DerivativeAssetsLiabilitiesAtFairValueNet" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_WeightedAverageExercisePricePerShareOfWarrant" xlink:label="WeightedAverageExercisePricePerShareOfWarrant" xlink:title="WeightedAverageExercisePricePerShareOfWarrant"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="WeightedAverageExercisePricePerShareOfWarrant" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAssumptionsExercisePrice" xlink:label="FairValueAssumptionsExercisePrice" xlink:title="FairValueAssumptionsExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueAssumptionsExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate" xlink:label="FairValueAssumptionsWeightedAverageVolatilityRate" xlink:title="FairValueAssumptionsWeightedAverageVolatilityRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueAssumptionsWeightedAverageVolatilityRate" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAssumptionsExpectedTerm" xlink:label="FairValueAssumptionsExpectedTerm" xlink:title="FairValueAssumptionsExpectedTerm"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueAssumptionsExpectedTerm" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAssumptionsRiskFreeInterestRate" xlink:label="FairValueAssumptionsRiskFreeInterestRate" xlink:title="FairValueAssumptionsRiskFreeInterestRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueAssumptionsRiskFreeInterestRate" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAssumptionsExpectedDividendRate" xlink:label="FairValueAssumptionsExpectedDividendRate" xlink:title="FairValueAssumptionsExpectedDividendRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueAssumptionsExpectedDividendRate" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EquityTransactionAxis" xlink:label="EquityTransactionAxis" xlink:title="EquityTransactionAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="EquityTransactionAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EquityTransactionDomain" xlink:label="EquityTransactionDomain" xlink:title="EquityTransactionDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionAxis" xlink:to="EquityTransactionDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuanceOfFourFiveOneSevenTwoFiveNineNonqualifiedFiveOneZeroYearOptionsMember" xlink:label="IssuanceOfFourFiveOneSevenTwoFiveNineNonqualifiedFiveOneZeroYearOptionsMember" xlink:title="IssuanceOfFourFiveOneSevenTwoFiveNineNonqualifiedFiveOneZeroYearOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuanceOfFourFiveOneSevenTwoFiveNineNonqualifiedFiveOneZeroYearOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuanceOfFourSixFourFourFourEightNonqualifiedThreeOneZeroYearOptionsMember" xlink:label="IssuanceOfFourSixFourFourFourEightNonqualifiedThreeOneZeroYearOptionsMember" xlink:title="IssuanceOfFourSixFourFourFourEightNonqualifiedThreeOneZeroYearOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuanceOfFourSixFourFourFourEightNonqualifiedThreeOneZeroYearOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuedToInvestorsOnJulyTwoEightTwoZeroOneZeroMember" xlink:label="IssuedToInvestorsOnJulyTwoEightTwoZeroOneZeroMember" xlink:title="IssuedToInvestorsOnJulyTwoEightTwoZeroOneZeroMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuedToInvestorsOnJulyTwoEightTwoZeroOneZeroMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuedToInvestorsOnOctoberTwoFiveTwoZeroOneThreeMember" xlink:label="IssuedToInvestorsOnOctoberTwoFiveTwoZeroOneThreeMember" xlink:title="IssuedToInvestorsOnOctoberTwoFiveTwoZeroOneThreeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuedToInvestorsOnOctoberTwoFiveTwoZeroOneThreeMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_IssuedToInvestorsOnNovemberOneSevenTwoZeroOneFourMember" xlink:label="IssuedToInvestorsOnNovemberOneSevenTwoZeroOneFourMember" xlink:title="IssuedToInvestorsOnNovemberOneSevenTwoZeroOneFourMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="IssuedToInvestorsOnNovemberOneSevenTwoZeroOneFourMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroZeroSixStockPlanMember" xlink:label="TwoZeroZeroSixStockPlanMember" xlink:title="TwoZeroZeroSixStockPlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroZeroSixStockPlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveEquityIncentivePlanMember" xlink:label="TwoZeroOneFiveEquityIncentivePlanMember" xlink:title="TwoZeroOneFiveEquityIncentivePlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroOneFiveEquityIncentivePlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveShorttermNonqualifiedOptionGrantsMember" xlink:label="TwoZeroOneFiveShorttermNonqualifiedOptionGrantsMember" xlink:title="TwoZeroOneFiveShorttermNonqualifiedOptionGrantsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroOneFiveShorttermNonqualifiedOptionGrantsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveLongtermIncentiveOptionGrantsMember" xlink:label="TwoZeroOneFiveLongtermIncentiveOptionGrantsMember" xlink:title="TwoZeroOneFiveLongtermIncentiveOptionGrantsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroOneFiveLongtermIncentiveOptionGrantsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_AtmOfferingMember" xlink:label="AtmOfferingMember" xlink:title="AtmOfferingMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="AtmOfferingMember" use="optional" order="11"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShorttermNonqualifiedStockOptionsMember" xlink:label="ShorttermNonqualifiedStockOptionsMember" xlink:title="ShorttermNonqualifiedStockOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="ShorttermNonqualifiedStockOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="12"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_LongtermNonqualifiedStockOptionsMember" xlink:label="LongtermNonqualifiedStockOptionsMember" xlink:title="LongtermNonqualifiedStockOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="LongtermNonqualifiedStockOptionsMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="13"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveStockEquityPlanMember" xlink:label="TwoZeroOneFiveStockEquityPlanMember" xlink:title="TwoZeroOneFiveStockEquityPlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="TwoZeroOneFiveStockEquityPlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="14"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_EquityPurchaseAgreementMember" xlink:label="EquityPurchaseAgreementMember" xlink:title="EquityPurchaseAgreementMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="EquityTransactionDomain" xlink:to="EquityPurchaseAgreementMember" use="optional" order="15"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="ClassOfWarrantOrRightOutstanding" xlink:title="ClassOfWarrantOrRightOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ClassOfWarrantOrRightOutstanding" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentWarrantsExercisePrice" xlink:label="InvestmentWarrantsExercisePrice" xlink:title="InvestmentWarrantsExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="InvestmentWarrantsExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockOtherSharesOutstanding" xlink:label="CommonStockOtherSharesOutstanding" xlink:title="CommonStockOtherSharesOutstanding"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="CommonStockOtherSharesOutstanding" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompenationWeightedAverageFairValue" xlink:label="ShareBasedCompenationWeightedAverageFairValue" xlink:title="ShareBasedCompenationWeightedAverageFairValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompenationWeightedAverageFairValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompensationWeightedAverageFairValueStockOptionsGranted" xlink:label="ShareBasedCompensationWeightedAverageFairValueStockOptionsGranted" xlink:title="ShareBasedCompensationWeightedAverageFairValueStockOptionsGranted"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationWeightedAverageFairValueStockOptionsGranted" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:title="StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="StockIssuedDuringPeriodSharesStockOptionsExercised" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompensationWeightedAverageExercisePriceStockOptionsExercised" xlink:label="ShareBasedCompensationWeightedAverageExercisePriceStockOptionsExercised" xlink:title="ShareBasedCompensationWeightedAverageExercisePriceStockOptionsExercised"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationWeightedAverageExercisePriceStockOptionsExercised" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompensationWeightedAverageFairValueStockOptionsExercised" xlink:label="ShareBasedCompensationWeightedAverageFairValueStockOptionsExercised" xlink:title="ShareBasedCompensationWeightedAverageFairValueStockOptionsExercised"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationWeightedAverageFairValueStockOptionsExercised" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="11"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompensationWeightedAverageFairValueStockOptionsForfeited" xlink:label="ShareBasedCompensationWeightedAverageFairValueStockOptionsForfeited" xlink:title="ShareBasedCompensationWeightedAverageFairValueStockOptionsForfeited"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationWeightedAverageFairValueStockOptionsForfeited" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="14"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompensationWeightedAverageFairValueStockOptionsExpired" xlink:label="ShareBasedCompensationWeightedAverageFairValueStockOptionsExpired" xlink:title="ShareBasedCompensationWeightedAverageFairValueStockOptionsExpired"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationWeightedAverageFairValueStockOptionsExpired" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="15"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="16"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="17"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompensationWeightedAverageFairValueEndOfYear" xlink:label="ShareBasedCompensationWeightedAverageFairValueEndOfYear" xlink:title="ShareBasedCompensationWeightedAverageFairValueEndOfYear"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationWeightedAverageFairValueEndOfYear" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="18"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="19"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="20"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ShareBasedCompensationWeightedAverageFairValueOptionsExerciseable" xlink:label="ShareBasedCompensationWeightedAverageFairValueOptionsExerciseable" xlink:title="ShareBasedCompensationWeightedAverageFairValueOptionsExerciseable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationWeightedAverageFairValueOptionsExerciseable" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="21"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfNonvestedSharesActivityTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfNonvestedSharesActivityTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfNonvestedSharesActivityTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePrice" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePrice" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceGranted" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceGranted" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceGranted"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceGranted" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceVested" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceVested" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceVested"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceVested" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="11"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceForfeited" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceForfeited" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceForfeited"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceForfeited" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="12"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_2" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="13"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_2" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="14"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePrice" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePrice_2" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePrice_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePrice_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="15"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureDisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureDisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureDisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:to="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RangeOneMember" xlink:label="RangeOneMember" xlink:title="RangeOneMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="RangeOneMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RangeTwoMember" xlink:label="RangeTwoMember" xlink:title="RangeTwoMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="RangeTwoMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RangeThreeMember" xlink:label="RangeThreeMember" xlink:title="RangeThreeMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="RangeThreeMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RangeFourMember" xlink:label="RangeFourMember" xlink:title="RangeFourMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="RangeFourMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_RangeFiveMember" xlink:label="RangeFiveMember" xlink:title="RangeFiveMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="RangeFiveMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:label="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:title="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm" xlink:label="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm" xlink:title="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="7"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="8"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="AwardTypeAxis" xlink:title="AwardTypeAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="AwardTypeAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="AwardTypeAxis" xlink:to="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MaximumNumberOfSharesInRespectToStockOptionsMember" xlink:label="MaximumNumberOfSharesInRespectToStockOptionsMember" xlink:title="MaximumNumberOfSharesInRespectToStockOptionsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="MaximumNumberOfSharesInRespectToStockOptionsMember" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_MaximumRestrictedSharesGrantedToOnePersonMember" xlink:label="MaximumRestrictedSharesGrantedToOnePersonMember" xlink:title="MaximumRestrictedSharesGrantedToOnePersonMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="MaximumRestrictedSharesGrantedToOnePersonMember" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="EmployeeStockOptionMember" xlink:title="EmployeeStockOptionMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="EmployeeStockOptionMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_StockAndStockEquivalentsMember" xlink:label="StockAndStockEquivalentsMember" xlink:title="StockAndStockEquivalentsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="StockAndStockEquivalentsMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OptionMember" xlink:label="OptionMember" xlink:title="OptionMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="OptionMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_WarrantAmountMember" xlink:label="WarrantAmountMember" xlink:title="WarrantAmountMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="WarrantAmountMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="8"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroZeroSixStockPlanMember" xlink:label="TwoZeroZeroSixStockPlanMember" xlink:title="TwoZeroZeroSixStockPlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="TwoZeroZeroSixStockPlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="9"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TwoZeroOneFiveEquityIncentivePlanMember" xlink:label="TwoZeroOneFiveEquityIncentivePlanMember" xlink:title="TwoZeroOneFiveEquityIncentivePlanMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="TwoZeroOneFiveEquityIncentivePlanMember" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="10"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:title="SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" use="optional" order="4"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfSegmentReportingInformationBySegmentTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureScheduleOfSegmentReportingInformationBySegmentTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureScheduleOfSegmentReportingInformationBySegmentTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementBusinessSegmentsAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentDomain" xlink:label="SegmentDomain" xlink:title="SegmentDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementBusinessSegmentsAxis" xlink:to="SegmentDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_ConsultingMember" xlink:label="ConsultingMember" xlink:title="ConsultingMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="SegmentDomain" xlink:to="ConsultingMember" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_TechnologyMember" xlink:label="TechnologyMember" xlink:title="TechnologyMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="SegmentDomain" xlink:to="TechnologyMember" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_CorporateAndEliminationsMember" xlink:label="CorporateAndEliminationsMember" xlink:title="CorporateAndEliminationsMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="SegmentDomain" xlink:to="CorporateAndEliminationsMember" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_SegmentReportingMember" xlink:label="SegmentReportingMember" xlink:title="SegmentReportingMember"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="SegmentDomain" xlink:to="SegmentReportingMember" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Revenues" xlink:label="Revenues" xlink:title="Revenues"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="Revenues" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:title="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Assets" xlink:label="Assets" xlink:title="Assets"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="Assets" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAdditions" xlink:label="PropertyPlantAndEquipmentAdditions" xlink:title="PropertyPlantAndEquipmentAdditions"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="PropertyPlantAndEquipmentAdditions" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InterestExpense" xlink:label="InterestExpense" xlink:title="InterestExpense"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="InterestExpense" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Depreciation" xlink:label="Depreciation" xlink:title="Depreciation"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="Depreciation" use="optional" order="6"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureFairValueByBalanceSheetGroupingTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureFairValueByBalanceSheetGroupingTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureFairValueByBalanceSheetGroupingTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="FairValueByFairValueHierarchyLevelAxis" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="FairValueMeasurementsFairValueHierarchyDomain" use="optional" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel1Member" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="FairValueInputsLevel2Member" xlink:title="FairValueInputsLevel2Member"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel2Member" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="FairValueInputsLevel3Member" xlink:title="FairValueInputsLevel3Member"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="FairValueInputsLevel3Member" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="6"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:label="FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:title="FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="CashAndCashEquivalentsFairValueDisclosure" xlink:title="CashAndCashEquivalentsFairValueDisclosure"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract" xlink:to="CashAndCashEquivalentsFairValueDisclosure" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:label="FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:title="FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="DerivativeFairValueOfDerivativeNet" xlink:title="DerivativeFairValueOfDerivativeNet"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract" xlink:to="DerivativeFairValueOfDerivativeNet" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
  </link:presentationLink>
  <link:roleRef roleURI="http://www.ltbridge.com/taxonomy/role/DisclosureFairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlockDetails" xlink:type="simple" xlink:href="ltbr-20151231.xsd#role_DisclosureFairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlockDetails"/>
  <link:presentationLink xlink:type="extended" xlink:role="http://www.ltbridge.com/taxonomy/role/DisclosureFairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlockDetails">
    <link:loc xlink:type="locator" xlink:href="ltbr-20151231.xsd#ltbr_NotesToFinancialStatementsAbstract" xlink:label="NotesToFinancialStatementsAbstract" xlink:title="NotesToFinancialStatementsAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="NotesToFinancialStatementsAbstract" xlink:to="StatementTable" use="optional" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:label="LegalEntityAxis" xlink:title="LegalEntityAxis"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="LegalEntityAxis" use="optional" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain" xlink:title="EntityDomain"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="LegalEntityAxis" xlink:to="EntityDomain" use="optional" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementTable" xlink:to="StatementLineItems" use="optional" order="5"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="DerivativeFairValueOfDerivativeLiability" xlink:title="DerivativeFairValueOfDerivativeLiability"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DerivativeFairValueOfDerivativeLiability" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" order="1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromIssuanceOfWarrants" xlink:label="ProceedsFromIssuanceOfWarrants" xlink:title="ProceedsFromIssuanceOfWarrants"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ProceedsFromIssuanceOfWarrants" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" order="2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromWarrantExercises" xlink:label="ProceedsFromWarrantExercises" xlink:title="ProceedsFromWarrantExercises"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="ProceedsFromWarrantExercises" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" order="3"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:label="FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" xlink:title="FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" order="4"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="DerivativeFairValueOfDerivativeLiability_2" xlink:title="DerivativeFairValueOfDerivativeLiability_2"/>
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="StatementLineItems" xlink:to="DerivativeFairValueOfDerivativeLiability_2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" order="5"/>
  </link:presentationLink>
</link:linkbase>
