Antofagasta Results Presentation Deck

2021 guidance Antucoya & Zaldívar Centinela Los Pelambres 725 120 248 358 2018 Copper production (kt) 770 130 277 363 2019 734 140 247 360 2020 1 Includes each operation at mid-point of guidance range and Zaldívar on a 50% basis 2 Cost and Competitiveness Programme Guidance¹ 730-760 125 275 345 2021E Copper production Guidance 730-760,000t Higher production as ore grades increase at Centinela Concentrates Cash costs Cash costs before by-products of $1.65/lb Net cash costs of $1.25/lb CCP2 target savings of $100 million ANTOFAGASTA PLC Capital expenditure $1.6bn as the rate of expenditure on our growth projects accelerates 8

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