Environmentalists worried about toxic clean-up met with democratic assemblywoman Lois Wolk.
They estimate it would cost $50-billion dollars to clean up all abandoned mines in the dozen western United States with mining operations.
Environmentalists worried about toxic clean-up met with democratic assemblywoman Lois Wolk.
They estimate it would cost $50-billion dollars to clean up all abandoned mines in the dozen western United States with mining operations.