Antofagasta Investor Day

N.0.0.09 N.0.0.0 S.0.0.00 120°0′0″W British Columbia Arizona UNLOCKING EMBEDDED GROWTH THROUGH EXPLORATION Regional Offices Mines / Projects Main prospective belt 120'0'0″W 90:00 W Twin Metals 90°00″W Toronto Lima Santiago 60°00″W Centinela Pelambres Jeg 60°00″W N.DD.CC 00:0′0″W 80°0′0″W S.0.0.SZ 5500W 55°00″W 70'0'0″W Antucoya Antofagasta Brujulina Zaldivar Los Pelambres Santiago Los Volcanes Centinela 75'0'0″W 70°0′0″W Source: 2020 Annual Report. 100% of each mineral resource Oxides Sulphides (millions of tonnes) (millions of tonnes) 03-150 300-500 Pe 800 - 1230 250 65'00″W Polo Sur 6000 1500-2000 65'0'0″W 500 Penacho Km Tesoro Sur Tesoro Central Esperanza Esperanza Sur Encuentro Mirador ● O Llano Oxides Sulphides (millions of tonnes) (millions of tonnes) 03-50 O 60 80-150 300-500 1000-1600 1800-2000 10 Km 11

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