CHANGE TO INTERIM RESULTS ANNOUNCEMENT DATE

For immediate release, 10 April 2014

CHANGE TO INTERIM RESULTS ANNOUNCEMENT DATE

Antofagasta plc announces that it has changed the date of its 2014 interim results to the six months ended 30 June 2014 announcement from Wednesday, 27 August 2014, to Tuesday, 26 August 2014.

Investors - London Media (Brunswick)

Andrew Lindsay [email protected] Carole Cable [email protected]

Chris Wilson [email protected] Robin Wrench [email protected]

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

Investors - Santiago

Alejandro Rivera [email protected]

Telephone +56 2 2798 7000