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VANCOUVER, BRITISH COLUMBIA--(Marketwire - Dec. 29, 2009) - Acero-Martin Exploration Inc. (the "Company") (TSX VENTURE:AMG)(FRANKFURT:AMX) wishes to announce that the terms of its private placement originally announced December 1, 2009, have been revised by the reduction in the Unit price from $0.25 per Unit to $0.225 per Unit and increased in size to 4,500,000 Units. In addition, the Warrants attached to the Units have been repriced to $0.275 per share from $0.30 per share exercisable for an eighteen month term, extended from the one year period previously announced. Each Unit remains consisting of one common share and one share purchase warrant exercisable into one common share of the Company upon the surrendering of every two full warrants. The proceeds from the private placement will be used to fund the continued exploration and development of the Pinaya gold-copper project in southern Peru, the continued exploration of the Red Mountain gold project in Yukon Territory, Canada, and for general working capital purposes. There may be a finder's fee payable in relation to this private placement and the same is subject to regulatory approval.

This news release was prepared on behalf of the Board of Directors, which accepts full responsibility for its contents.

On behalf of the Board:

Michael C. Scholz, Chairman and Director

ACERO-MARTIN EXPLORATION INC.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.