Antofagasta Results Presentation Deck

11 CENTINELA CENTINELA Innovation and technology update Improves operations' costs and productivity Autonomous trucks ● ● Integrated operations centre ● ● Operating at Esperanza Sur pit Reduces operator risk Increases efficiency ● At Los Pelambres and Centinela Enabler for the operational continuity of the end-to-end value chain Improves performance and reduces variability Antofagasta plc | 2022 Full Year Results ANTOFAGASTA PLC Autonomous drilling At Los Pelambres and Centinela Increased utilisation by 10% compared with conventional system ● Cuprochlor-TⓇ Recoveries of 70% leaching primary sulphides 38,000 tonne industrial-sized heap leach test completed at Centinela Pre-feasibility testing at Zaldívar 27

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