Sale of Electricity Transmission Lines

NEWS RELEASE, 13 JULY 2018

SALE OF ELECTRICITY TRANSMISSION LINES

CENTINELA SELLS NON-CORE ASSETS

Yesterday Antofagasta plc's (the "Company") subsidiary Mineral Centinela announced the sale of Centinela Transmisión, the company that holds its electricity transmission lines, for $117 million.

Ivan Arriagada, the CEO of Antofagasta plc, commented: "This sale is consistent with the Group's strategy of disposing of its water and energy assets. This allows us to focus on our core business of producing copper safely and profitably, while also taking advantage of any organic growth opportunities that may arise".

Further details of the sale can be found at www.aminerals.cl.

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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

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