Antofagasta Regulatory News (ANTO)

For immediate release, September 25 2014

Interim Dividend 11.7 US Cents per Ordinary Share - Dividend No. 39 -

Amount Payable in Sterling and Euro

Further to the half yearly financial report announcement on 26 August 2014, the sterling equivalent of the interim dividend of 11.7 US cents will be 7.1551 pence per ordinary share, based on an exchange rate of £1 = US$1.6352, and the Euro equivalent will be 9.1392 Euro cents per ordinary share, based on an exchange rate of €1 = US$1.2802.

Payment of the dividend is scheduled for Thursday 9 October 2014.

Investors - London Media (Brunswick)

Andrew Lindsay alindsay@antofagasta.co.uk Carole Cable antofagasta@brunswickgroup.com

Paresh Bhanderi pbhanderi@antofagasta.co.uk Robin Wrench antofagasta@brunswickgroup.com

Telephone +44 20 7808 0988 Telephone +44 20 7404 5959

Investors - Santiago

Alejandro Rivera arivera@aminerals.cl

Telephone +56 2 2798 7000