February 17, 2005 - AMERICAN BONANZA GOLD MINING CORP. (TSX Venture: BZA) announces further to our press release issued February 16, 2005, announcing 60.0 grams per tonne gold over 3.2 metres at the Copperstone project.  This hole tests the northwest extremity of the known D Zone and will be followed up with additional drilling from surface as the capacity of the underground drilling rig has been exceeded in this direction.  We are pleased to include the following link to our website to view the surface drilling plan map: http://www.americanbonanza.com/properties/copperstone/map_gallery/. 

On December 22, 2004 Bonanza and International Taurus Resources Inc. (TSX:ITS) announced that a formal Arrangement Agreement was executed to merge both companies and acquire a further 38 per cent interest in the Fenelon project, and certain other Casa Berardi mineral interests form Fairstar Explorations Inc.. Proxy materials will be mailed to shareholders on February 23, 2005 with shareholders meetings to be held on March 21, 2005.

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

AMERICAN BONANZA GOLD MINING CORP.

(signed) Brian Kirwin
President and Chief Executive Officer

The TSX Venture Exchange has not reviewed and does not accept responsibility
 for the adequacy or accuracy of this news release.

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