First Quantum Minerals Declares an Interim Dividend of CDN $0.0603 per Share

NEWS RELEASE 12-20 August 1, 2012 www.first-quantum.com

FIRST QUANTUM MINERALS DECLARES AN INTERIM DIVIDEND OF CDN $0.0603 PER SHARE

First Quantum Minerals Ltd. (“First Quantum” or the “Company”, TSX Symbol “FM”, LSE Symbol “FQM”) announced today that its Board of Directors has approved an interim dividend of Cdn $0.0603 per share in respect to the financial year ending December 31, 2012.

The dividend will be paid on September 20, 2012 to shareholders of record on August 29, 2012. The exdividend date is August 27, 2012.

The dividends paid are considered eligible dividends for Canadian tax purposes.

On Behalf of the Board of Directors 12g3-2b-82-4461 of First Quantum Minerals Ltd. Listed in Standard and Poor’s G. Clive Newall President For further information visit our web site at www.first-quantum.com

North American contact: Sharon Loung, Director, Investor Relations Tel: (647) 346-3934 Fax: (604) 688-3818 Toll Free: 1 (888) 688-6577 E-Mail: [email protected]

United Kingdom contact: Clive Newall, President Tel: +44 140 327 3484 Fax: +44 140 327 3494 E-Mail: [email protected]