Prairie Creek Mine

NorZinc. Indicated mineral reserves of approximately 1.7 million tonnes at an average grade of 155.58 g/t silver, 8.45% lead, and 10.36% zinc. Inferred mineral reserves of approximately 6.4 million tonnes at an average grade of 115.78 g/t silver, 8.00% lead, and 8.17% zinc. Preliminary Feasibility Study completed in 2017. Operating permits obtained. Full ASR permits expected. NorZinc expects to being full production in 2022.