Antofagasta Results Presentation Deck

1144 " - BARR ANTOFAGASTA PLC Ол VIDEO WALL CONCENTRACORA KALLE SAN wwmmmm 11111111 11: 1187: %m Op No w0 Image: Los Pelambres' Integrated Remote Operations Centre in Santiago, inaugurated in H1 2023. Ch BAROM Overview H1 2023 Results Iván Arriagada | Chief Executive Officer FINE 2207-23 SW Feeder S CANALON STATUS OLINOS 2 STATUS POPRADAR SHAMA 19.Dec 2022 14:43:06 471 SUPPEN 12. Dec 2022 14:43:06 12.Dec 2022 14:43 06 Feeder 2 INWES 12.Dec 2022 14:43:06 1200-977EKERCE WESE Feeder 3 BIN11 Planta Gravilla 4

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