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Investor Presentaiton

POTOSÍ, BOLIVIA SAN VICENTE // Polymetallic silver mine San Vicente • . 95% owned and operated underground mine Average throughput capacity of ~950 tpd utilizing a standard flotation process to produce silver-zinc and silver-lead concentrates • Mechanization efforts, enhanced mine dilution controls and improvements in site infrastructure underway to lower production costs Silver Production (Moz) 2.3 2.5 2.5 2020 2021 2022 Mineral Reserves & Resources Grade Contained Metal Tonnes Ag Cu (Mt) (g/t) (%) Pb Zn Ag Cu Pb Zn (%) (%) (Moz) (kt) (kt) (kt) P&P Reserves 1.6 306 0.25 0.30 3.35 16.0 4 5 55 M&I Resources 1.3 190 0.20 0.22 2.42 7.8 3 3 31 Inferred 2.9 249 0.21 0.29 2.65 23.3 6 8 77 Resources (as of June 30, 2022; see presentation Appendix for more detailed information on the Company's reserves and resources and the metal price assumptions used for these estimates.) 34
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