National Wildlife Federation releases report comparing sulfide mining regulation in Great Lakes region

Halley also mentioned two mines impacting Native American reservations in the West. Impacts from the Zortman and Landusky open-pit gold mines in Montana included a 50,000-gallon cyanide spill, pollution of public water systems, poisoned fish and wildlife and contaminated Native American sacred sites. Pollution from the Silver Valley mines in Idaho's Coeur d’Alene River Basin, adjacent to the Coeur d'Alene Reservation, resulted in a 21-square-mile Superfund site and more than a billion dollars in damage.
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