COMPLETION OF ZALDIVAR TRANSACTION

NEWS RELEASE, 1 DECEMBER 2015

COMPLETION OF ZALDIVAR TRANSACTION

Further to the announcement on 30 July 2015, Antofagasta plc (the "Company") is pleased to announce the completion of the acquisition of a 50% interest in Compañia Minera Zaldívar ("Zaldívar") from Barrick Gold Corporation. The Company has become the operator of the mine.

Zaldívar is a high-quality open-pit, heap-leach copper mine located in Northern Chile with over 20 years of operating history and remaining reserve life of approximately 14 years. In 2014, Zaldívar produced approximately 100,000 tonnes of copper at a net cash cost of $1.79/lb.

There have been no material changes to the terms of the acquisition since the announcement of the transaction.

Investors - London Media - London

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

Paresh Bhanderi [email protected] Will Medvei [email protected]

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

Investors - Santiago Media - Santiago

Alfredo Atucha [email protected] Pablo Orozco [email protected]

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

Telephone +56 2 2798 7000