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Ucore and Landmark Complete Merger

HALIFAX, NS– (MARKET WIRE) — August 17, 2007 — Ucore Uranium Inc. (“Ucore” or the “Company”) (TSX-V: UCU ) and Landmark Minerals Inc. (“Landmark”) (TSX-V: LML) are pleased to announce that the previously announced merger transaction between the two companies was completed following the close of the market today.

The transaction was completed under a court-approved plan of arrangement.  The plan of arrangement was approved by the Landmark shareholders on August 10, 2007, and by the Supreme Court of British Columbia on August 15, 2007.  Upon closing of the transaction, all of the outstanding common shares of Landmark were exchanged for common shares of Ucore on the basis of 0.68 Ucore shares for every 1 share of Landmark and the Landmark common shares were delisted from the TSX Venture Exchange.

Computershare Investor Services Inc., the depositary for the transaction, will distribute a letter of transmittal containing instructions for the return of share certificates representing Landmark common shares and the issuance of certificates representing Ucore common shares to Landmark shareholders of record as of the effective time of the plan of arrangement. Shareholders who hold Landmark common shares through a broker or other intermediary should contact their broker or intermediary for details on the exchange of their shares.

This press release includes certain statements that may be deemed “forward-looking statements”.  All statements in this release, other than statements of historical facts, that address future exploration drilling, exploration activities and events or developments that the Corporation expects, are forward looking statements.  Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in forward-looking statements.  Factors that could cause actual results to differ materially from those in forward-looking statements include exploitation and exploration successes, continued availability of financing, and general economic, market or business conditions.

 The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this press release. 
(Not for dissemination in the United States)