Antofagasta Investor Day Presentation Deck

ENERGY AND WATER Renewable energy 19.4%2 Mining division 1 2 100%¹ Zaldívar Expect 100% renewable energy by-end 2022 From 1 July 2020 2020 Sea water 43% Mining division ANTOFAGASTA PLC Reuse rates 78 - 96% depending on operation Expect >90% of sea water by 2025

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