Atlantic Richfield Co. responsible for clean-up of copper mine toxins.

anaconda copper, atlantic, atlantic richfield, atlantic richfield co, atlantic richfield company, biosphere reserve, brian gibbs, british petroleum, cleanup, copper, endangered species act, environmental protection agency, epa, groundwater, lake, lake lahontan, mine, nevada, nuclear regulatory commission, occupational health, protection, pyramid lake, residents, river, s. gov, safety administration, sierra nevada, uranium, walker, walker lake, walker river, water