Definitive Arrangement Agreement Signed By Western Copper and Lumina Resources

October 27, 2006

Definitive Arrangement Agreement Signed By Western Copper and Lumina Resources

VANCOUVER, BRITISH COLUMBIA – Today it is announced that Western Copper Corp. (TSX: WRN) (“Western”) and Lumina Resources Corp. (TSX: LUR) (“Lumina”) have signed a definitive Arrangement Agreement under which Western will acquire, through a previously announced Plan of Arrangement, all of the outstanding shares of Lumina.

As stated in the Agreement, each Lumina shareholder holding shares at market close on the closing date of the Plan of Arrangement, will receive one common share of Western Copper for each Lumina share.

Complete details of the Plan of Arrangement will be included in the information circular expected to be sent to Lumina shareholders on October 30, 2006 to those who are Lumina shareholders of record as of October 18, 2006. A special meeting of Lumina shareholders will take place on November 24, 2006 in order to vote on the transaction. Subsequent to approval at the shareholder meeting and receipt of regulatory and court approvals, the transaction is expected to close by November 29, 2006.

Lumina Resources is a publicly traded mineral exploration company focused on discovering and developing copper, gold and molybdenum at its three Canadian properties including Hushamu in British Columbia, Casino in the Yukon Territory and Redstone in the Northwest Territories.

Western Copper Corp. holds approximately C$38 million in cash, the 100% owned Carmacks Copper Project in the Yukon Territory and the early-stage Sierra Almoloya exploration project in the Central Mexican Silver Belt in Chihuahua State, Mexico which is currently being explored by the optionee.

On behalf of the board,

For more information, please contact:

Call: 1.888.966.9995 or 604.684.9497

Cautionary Notes
Statements contained in this news release that are not historical fact, such as statements regarding the economic prospects of the Company’s projects, the Company’s future plans or future revenues, timing of development or potential expansion or improvements, are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are subject to risks and uncertainties, which could cause actual results to differ materially from estimated results. Such risks and uncertainties include, but are not limited to, the Company’s ability to raise sufficient capital to fund development, changes in general economic conditions or financial markets, changes in prices for the Company’s mineral products or increases in input costs, litigation, legislative, environmental and other judicial, regulatory, political and competitive developments in Mexico or Canada, technological and operational difficulties or inability to obtain permits encountered in connection with our exploration and development activities, labor relations matters, and changing foreign exchange rates, all of which are described more fully in the Company’s filings with the Securities and Exchange Commission. The Toronto Stock Exchange has not reviewed nor accepted responsibility for the adequacy or accuracy of the contents of this news release, which has been prepared by management.