AMERICAN BONANZA GOLD MINING CORP. (TSX Venture: BZA) (�Bonanza�) announces that, subject to regulatory approval, it will extend the expiry date of the non-transferrable common share purchase warrants (�Warrants�) that would have expired on October 18, 2004 to October 18, 2005.� The Warrants entitle the purchase of 6,393,333 shares of Bonanza and are exercisable at $0.17 per share.� The Warrants were issued as part of a private placement in October, 2002, with insiders holding 15% of the total Warrants issued.

Additional information about Bonanza can be obtained at:� www.americanbonanza.com

AMERICAN BONANZA GOLD MINING CORP.

(signed) Giulio Bonifacio

Executive Vice President and Chief Financial Officer

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The TSX Venture Exchange has not reviewed and does not accept responsibility

�for the adequacy or accuracy of this news release.

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For further information call or write:

Catherine Tanaka, Investor Relations (604) 688-7523
American Bonanza Gold Mining Corp.
Suite 1606-675 W. Hastings St.
Vancouver, BC V6B 1N2