Investment Program to Significantly Increase Production

COMPANY PRESENTATION (US$/lb) Low Cost Operations (US$/lb) CASH COST PER POUND OF COPPER PRODUCED NET OF BY-PRODUCTS 1.11 1.1 0.95 0.92 0.87 0.88 0.9 0.7 0.69 0.67 0.56 0.5 2015 2016 2017 2018 2019 2020 2021 1Q22 OPERATING CASH COST PER POUND OF COPPER PRODUCED 1.8 1.66 1.6 1.54 1.52 1.49 1.44 1.4 1.37 1.64 1.83 1.2 2015 2016 2017 2018 2019 2020 2021 1Q22 14 LOW COST DRIVERS Fully integrated low cost operations. World class assets. Significant SX-EW production. Strong by-product credits. Management focus on cost efficiency and growth. 1Q2022 COST STRUCTURE Labor 13% Fuel 15% Power Maintenance 20% 18% Operating Materials 17% 17% Other Southern Copper

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