Director Declaration

NEWS RELEASE, 30 APRIL 2018

DIRECTOR DECLARATION

In accordance with Listing Rule 9.6.14, Antofagasta plc (the "Company") announces that Francisca Castro, a Non-Executive Director of the Company, has been appointed as a director of SalfaCorp S.A. with effect from 3 April 2018.

Investors - London Media - London

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

Telephone +44 20 7808 0983 Telephone  +44 20 7404 5959

Andres Vergara [email protected] Will Medvei [email protected]

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

Investors - Santiago Media - Santiago

Francisco Veloso [email protected] Pablo Orozco [email protected]

Telephone +56 2 2798 7000 Carolina Pica [email protected]

Telephone +56 2 2798 7000