Investor Presentaiton

Santander Mine - Peru 941 million lbs contained zinc (in measured & indicated resources - as at December 31, 2019) 2020 Production (100% basis) Zn 62 million payable lbs Zinc Pb 7 million payable lbs Lead Ag 411,000 payable ozs Silver Highlights • Multiple exploration targets on property . Current drilling geophysical anomaly at depth from recent surveys showing potential for porphyry/skarn style mineralization See "Compliance with NI 43-101" for additional information on the mineral reserves and mineral resources in above table. Proven & Probable Reserves included in Measured & Indicated Resources. Mineral resources that are not mineral reserves do not have demonstrated economic viability. Reserves and Resources (as at December 31, 2019) Magistral North, Central, South Orebodies TREVALI SANTANDER PERU Category Tonnes Zn (%) Pb (%) Ag (g/t) Proven Reserves 1.34 4.91 0.46 26.95 Probable Reserves 0.51 4.74 0.22 19.62 Proven and Probable Reserves 1.86 4.86 0.39 24.92 Measured Resources 2.34 4.98 0.68 34.63 Indicated Resources 1.24 4.72 0.32 20.53 Measured and Indicated Resources 3.58 4.89 0.55 29.76 Inferred Resources 1.07 3.93 0.24 24.97 Santander Pipe Deposit Category Tonnes Zn (%) Pb (%) Ag (g/t) Measured Resources 0.54 8.09 0.03 16.31 Indicated Resources 3.23 6.43 0.01 11.37 Measured and Indicated Resources 3.77 6.67 0.01 12.08 Inferred Resources 1.31 5.37 0.02 7.42 19

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