Government of New Brunswick
March 2021

In a March 30, 2021 press release, Trevali Mining Corporation released Mineral Reserves and Mineral Resources statements as of December 31, 2020 for their base-metal properties in northern New Brunswick. At the Caribou Mine, proven and probable mineral reserves are 4.51 million tonnes grading 6.06% Zn, 2.30% Pb, and 70.14 g/t Ag. The measured and indicated mineral resources are 12.52 million tonnes grading 6.52% Zn, 2.47% Pb, and 73.25 g/t Ag. The inferred mineral resources are 2.65 million tonnes grading 5.72% Zn, 2.39% Pb, and 73.86 g/t Ag. At the Restigouche property, measured and indicated resources are 1.08 million tonnes grading 5.00% Zn, 3.30% Pb, and 46.30 g/t Ag, and an inferred resource of 580,000 tonnes of 6.10% Zn, 4.30% Pb, and 67.83 g/t Ag. At the Halfmile property, measured and indicated resources are reported to be 7.80 million tonnes grading 6.94% Zn, 2.35% Pb, and 36.00 g/t Ag, and an inferred resource of 6.50 million tonnes grading 5.62% Zn, 1.51% Pb, and 23.00 g/t Ag. An indicated resource 4.70 million tonnes grading 5.30% Zn, 2.10% Pb, and 49.00 g/t Ag was reported for the Stratmat property with an inferred resource of 2.40 million tonnes grading 4.80% Zn, 2.10% Pb, and 39.00 g/t Ag.