Antofagasta Investor Day

Antucoya 70% owned 19-year mine life Copper cathodes Centinela • 70% owned • 47-year mine life • Copper cathodes and concentrates Zaldívar 50% owned (and operated) 15-year mine life Copper cathodes Los Pelambres • 70% owned • 14-year mine life Copper concentrates Transport • Cargo transport system in the Antofagasta Region of Chile 900 km rail network 2020 Cu production 79,300 tonnes 246,800 tonnes 48,200 tonnes 359,600 tonnes 6.4 m tonnes transported YTD3Q 2021 Net cash costs $2.04/lb $1.10/lb $2.42/lb $0.82/lb Reserves¹ (tonnes) 711 million @0.32% Cu 2.1 billion @0.41% Cu 468 million @0.45% Cu 1.0 billion @0.59% Cu 1. As at 31 December 2020 Antofagasta Región Centinela port Coquimbo Región Punta Chungo Port Santiago

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