Antofagasta Investor Conference Presentation Deck

1 2 3 Environment and climate change Committed to emissions reduction and efficient water use Mining division Since 2020 2022 GHG emission targets 30% Reduction by 2025 Carbon neutral by 2050 100% renewable energy since April 2022¹ 1 million tCO₂e reduction² in Scope 2 emissions 84%³ of water used is recirculated ANTOFAGASTA PLC 45%³ of water used is from the sea Sea and recirculated water More than 90% of total operational use by 2025 Antofagasta plc | 2023 BMO Global Metals, Mining & Critical Minerals Conference 8

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