Split Rock Mill Site, Wyoming

The Split Rock Mill was a uranium mill in Jeffrey City, operated by Western Nuclear Inc. from 1957 to 1981. In 1988 the mill facilities were demolished and buried in a prepared area at the mill site and the land contoured. Its three tailings impoundments have also been remediated. This was a major uranium production region, with mines and mills north and south of Jeffrey City. As operations closed, the town’s population shrank from a few thousand to a few dozen, in a decade.