Final Dividend

Antofagasta plc

For immediate release

Cleveland House Telephone: + 44 20 7808 0988

33 King Street, St James's Fax: + 44 20 7930 7578

London Email: [email protected]

SW1Y 6RJ

United Kingdom

Final Dividend (including Special Dividend) of 36.0 US cents per ordinary share - Dividend no 34 - amount payable in sterling and Euro

London, 17 May 2012

Further to the preliminary results announcement of 13 March 2012, the sterling equivalent of the recommended final dividend of 36.0 US cents will be 22.6102 pence per ordinary share, based on an exchange rate of £1 = US$ 1.5922, and the Euro equivalent will be 28.2464 Euro cents per ordinary share, based on an exchange rate of €1 = US$1.2745.

Payment of the dividend is scheduled for Thursday 14 June 2012.