Antofagasta Results Presentation Deck

2023 HY production cost breakdown $/lb $1.75/lb Net cash costs H1 2023 0.73 By-products credits $2.48/lb Gross cash costs HY 2023 0.81 (0.25) "I TC/RC & Comm. $3.04/lb Mine development, Inventory variation & IFRS 16 Production Cost H1 2023 Others Other inputs 9% Sulphuric acid Antofagasta plc | 2023 Half Year Results 6% Energy 7% Fuel and Lubricants 8% 11% Labour 13% $1,979m 14% Materials and spare parts ANTOFAGASTA PLC 31% Services 33

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