Umetco Uravan Uranium Site, Colorado

A former uranium and vanadium mining and milling town, which operated from the early 1900's until 1984, becoming profusely contaminated with radioactive materials, metals, and inorganic toxins in the process. In 1984, Umetco, a subsidiary of Dow Chemical, assumed management of the facility. In 1986, the EPA declared the Uravan site a Superfund clean up site. Remediation efforts began in 1987, and concluded in 2007 at a cost of $120 million.