Antofagasta Results Presentation Deck

2021 production cost breakdown $/lb 1.20 0.59 Net Cash By-products Cost FY credits 2021 1.79 Gross Cash Cost FY 2021 (0.21) 0.38 1.96 TC/RC & Mine Production Comm. development, Cost FY 2021 Inventory variation & IFRS 16 Others Other inputs 11% Sulphuric acid Antofagasta plc | 2021 Preliminary financial results Energy 7% 4% Fuel and Lubricants 7% 13% $3,121m 13% Materials and spare parts Labour 14% 12% 20% Services Maintenance services 33

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