Antofagasta Results Presentation Deck

Safety and health A safe working environment for everyone 1 VITAMORHA Image: Members of the maintenance team at Centinela's workshops. H1 2023: Zero fatalities. RECENT INITIATIVES IN SAFETY AND HEALTH Focus on risk identification and management processes. Lost time injury rate measured per million hours worked Safety performance: Fatalities, HPI and LTIFR 316 1.6 1 2018 219 Antofagasta plc | 2023 Half Year Results 1.0 2019 86 0.9 2020 Targeting safety initiatives in known high-risk areas. Fatalities High Potential Incidents (HPI) Lost Time Injury Frequency Rate (LTIFR)¹ 65 1.3 1 2021 42 0.8 2022 13 0.6 ANTOFAGASTA PLC HY 2023 Strengthened risk monitoring. 17

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