Antofagasta Results Presentation Deck

Highlights: H1 2023 Earnings per share increase by 27% Safety performance O Fatalities -43% High Potential Incidents -30% Lost Time Injury Frequency Rate Copper production +10% (295.5kt) TOMATI 23 JAMES KOMAYU NY TIVO Y COMU EBITDA $1.3bn (+8%) Earnings per share +27% (33.5 cents) BREA Antofagasta plc | 2023 Half Year Results Revenue $2.9bn (+14%) b ANTOFAGASTA PLC 160 litres/second Desalinated water supply Los Pelambres (June 2023 average, 40% of capacity) 5

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