The Eagle Mine Superfund Site is located in Eagle County, Colorado, approximately one mile southeast of Minturn. The area was impacted by past mining activity along the Eagle River between the towns of Red Cliff and Minturn. Miners began working the Eagle Mine in the 1880s, searching for gold and silver. The Eagle Mine later became a large zinc mining operation, leaving high levels of arsenic, cadmium, copper, lead and zinc in the soil and in surface and groundwater. Copper-silver production continued at Eagle Mine until the mine workings were allowed to flood and the mine closed in 1984.