Investor Presentaiton

Metal Price Assumptions Used to Estimate Mineral Reserves and Resources as of June 30, 2022 CATEGORY 49 49 MINE Huaron Morococha La Colorada AG US$/OZ AU US$/OZ CU US$/T PB US$/T ZN US$/T All categories 19.00 1,300 7,000 2,000 2,600 All categories 19.00 1,300 7,000 2,000 2,600 All categories 19.00 1,300 7,000 2,000 2,600 La Colorada skarn All categories 22.00 2,200 2,800 Reserves 19.00 1,600 Dolores Resources 22.00 1,700 La Bolsa All categories 14.00 825 Reserves 19.00 1,500 Manantial Espejo Resources 22.00 1,700 San Vicente All categories 19.00 1,300 7,000 Navidad All categories 12.52 2,000 1,100 2,600 Pico Machay All categories 700 Reserves 19.00 1,500 Joaquin Resources 22.00 1,700 Escobal All categories 20.00 1,300 2,204 2,424 Reserves 19.00 1,500 Shahuindo Resources 22.00 1,700 Reserves 19.00 1,500 La Arena Resources 22.00 1,700 La Arena II All categories 1,500 8,816 Timmins Whitney All categories 1,500 All categories 1,200 Gold River All categories 1,200 Marlhill All categories 1,125 Inside pit 1,150 Vogel Below pit 1,150 METAL PRICE ASSUMPTIONS USED TO ESTIMATE MINERAL RESERVES AND RESOURCES

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