Minefinders 40-F 2010 FY Annual report (Canada)

Exhibit 12

 

CONSENT OF EXPERT

February 24, 2011

British Columbia Securities Commission

Alberta Securities Commission

Saskatchewan Financial Services Commission

Manitoba Securities Commission

Ontario Securities Commission

New Brunswick Securities Commission

Nova Scotia Securities Commission

Registrar of Securities, Prince Edward Island

Securities Commission of Newfoundland and Labrador

Registrar of Securities, Northwest Territories

Registrar of Securities, Nunavut

Registrar of Securities, Yukon

United States Securities and Exchange Commission

Re: Annual Information Form dated February 24, 2011 (the “Annual Information Form”) of Minefinders Corporation Inc. (the “Company”).

I refer to the report entitled "NI 43-101 Technical Report on the Minable Reserve for the Dolores Gold-Silver Project, Chihuahua State, Mexico" dated March 25, 2008 (the "Report") as referenced in the Annual Information Form and documents incorporated by reference therein.

This letter is being filed as my consent to the use of my name and the Report in the Annual Information Form and in documents incorporated by reference therein.

I confirm that I have read the Annual Information Form and I have no reason to believe that there are any misrepresentations that are derived from the Report referred to above or that are within my knowledge as a result of the services I performed in connection with such Report.

I consent to the filing of this consent with the United States Securities and Exchange Commission as part of the Company’s Form 40-F dated February 24, 2011, and any amendment thereto, including post-effective amendments and as part of a post-effective amendment to the Company’s Registration Statement on Form F-10 (File No. 333-170839), to incorporate the Company’s Form 40-F dated February 24, 2011.

Yours truly,

Gustavson Associates, LLC

William J. Crowl, R.G.
Vice President, Mining Sector

5757 Central Ave Suite D Boulder, CO 80301 USA +1 (303) 443-2209 FAX +1 (303) 443-3156
Mining Office: 274 Union Boulevard Suite 450 Lakewood, CO 80228 USA +1 (720) 407-4062 FAX +1 (720) 407-4067
http://www.gustavson.com        gustavson@gustavson.com