Antofagasta Regulatory News (ANTO)

For immediate release, 21 August 2014

Changes to Board Committees

In accordance with Listing Rule 9.6.11, Antofagasta plc announces that following a review of the composition of its committees, the committees shall be composed as follows, with effect from 1 September 2014.

· Audit and Risk Committee: Mr. William Hayes (chairman), Mr. Timothy Baker and Mr. Ollie Oliveira

· Nomination Committee: Mr. Jean-Paul Luksic (chairman), Mr. Hayes and Mr. Baker

· Remuneration and Talent Committee: Mr. Baker (chairman), Mr. Hayes and Mr. Oliveira

· Sustainability and Stakeholder Management Committee: Mr. Ramón Jara (chairman), Mr. Juan Claro and Ms. Vivianne Blanlot

Mr. Claro therefore rotates off the Nomination Committee and the Remuneration and Talent Committee. Mr. Baker rotates off the Sustainability and Stakeholder Management Committee and joins the Nomination Committee. Mr. Oliveira joins the Remuneration and Talent Committee and Ms. Blanlot joins the Sustainability and Stakeholder Management Committee. The composition of the Audit and Risk Committee remains unchanged.

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