NEWS RELEASE, 16 SEPTEMBER 2016

INTERIM DIVIDEND PAYABLE

DIVIDEND NO. 42 - AMOUNT PAYABLE IN STERLING AND EURO

Further to the half yearly results announcement on 16 August 2016, the Sterling equivalent of the interim dividend of 3.1 US cents will be 2.3494 pence per ordinary share, based on an exchange rate of £1 = US$1.3195, and the Euro equivalent will be 2.7568 Euro cents per ordinary share, based on an exchange rate of €1 = US$1.1245.

Payment of the dividend is scheduled for 30 September 2016.

Investors - London                                                                Media (Brunswick)

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

Paresh Bhanderi    pbhanderi@antofagasta.co.uk     Will Medvei           antofagasta@brunswickgroup.com               

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

Investors - Santiago                                                             Media - Santiago

Alfredo Atucha        aatucha@aminerals.cl                   Pablo Orozco          porozco@aminerals.cl

Telephone                  +56 2 2798 7000                                 Carolina Pica         cpica@aminerals.cl

Telephone                +56 2 2798 7000