The Manhattan District Uranium Mill Site from 1943 to 1945 at Uravan, Colorado processing for uranium for the atomic bomb from mill tailings at various sties. Photo shows in the foreground the posts for a 10 foot high chain link fence, a guard shack, change rooms. In the center, the oil room, warehouse and precipitation room. The laboratory and business offices building, not yet finished. To the far left are the steam boilers and the dryer. Across the San Miguel river was the United States vanadium mill (Union Carbide) processing uranium and vanadium.