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Montana Trout Unlimited

Track Record of Montana Modern Hardrock Mining

This recent report evaluated the adequacy of water quality predictions and reclamation bonds at modern hardrock mines in Montana. Based on a review of government documents, water quality predictions made during mine permitting were wrong at 11 out of 12 mines (91.7% of mines). Not only were water quality predictions incorrect in nearly every case, but the water quality impacts were often severe, including contamination of drinking water, loss of fish and wildlife habitat, harm to private property and agricultural lands, and the formation of acid mine drainage that will cause lasting pollution that requires water treatment in perpetuity.