Exhibit
4.1
THORIUM
POWER, LTD.
8300
Greensboro Drive, Suite 800
McLean,
Virginia 22102
703.918.4904
NOTICE
EXTENDING
COMMON
STOCK PURCHASE WARRANTS
To
the
holders of our common stock purchase warrants:
On
November 17, 2006, the board of directors of Thorium Power, Ltd., authorized
the
extension of the expiration date of the common stock purchase warrants described
below by six months from the expiration date identified on the respective
warrant.. This extension of the expiration date will apply to all of the
warrants issued pursuant to, and subject to the terms and conditions of, those
certain Subscription Agreements with the Company dated November 23, 2005,
February 14, 2006 and May 4, 2006, as well as to the warrants to purchase shares
of common stock of Thorium Power, Inc., that were assumed pursuant to the
Agreement and Plan of Merger by and among Novastar Resources Ltd., TP
Acquisition Corp. and Thorium Power, Inc., dated February 14, 2006.
November
17, 2006
By
ORDER
OF THE BOARD OF DIRECTORS,
THORIUM
POWER, LTD.
By: /s/
Seth Grae_______________________
President
and Chief Executive Officer