TAILINGS IMPOUNDMENTS

The tailings impoundments shown on this page are located at the Swetwater Uranium Project approximately forty-two (42) miles northwest of Rawlins, Wyoming, UMETCO Minerals Corporation's Gas Hills Site near Riverton, Wyoming and International Uranium (USA) Corporations's (IUC's) White Mesa Mill near Blanding, Utah
The tailings impoundment shown in this aerial photograph to the right is the Sweetwater Uranium Project tailings impoundment. The Sweetwater Mill is the only remaining uranium mill in Wyoming. It is a sixty (60) acre Hypalon lined impoundment designed to retain uranium mill tailings. The tailings impoundment is the large, black pond in the lower right hand corner of the photograph. (Photograph courtesy of Kennecott Uranium Company)
	The impoundment shown to the left is UMETCO Minerals Corporation's Gas Hills tailings impoundment which is in reclamation. A discussion about groundwater at the UMETCO Gas Hills Site is presented elsewhere in this web site. This impoundment is being reclaimed. It adjoins Two (2) other uranium mill tailings sites also under reclamation. These other sites are the American Nuclear Site and Pathfinder Mines Corporation's Lucky Mc Site.(Photograph courtesy of UMETCO Minerals Corporation and John Hamrick)
The International Uranium (USA) Corporation tailings impoundment shown to the right is located at their White Mesa Mill located near Blanding, Utah. It is one of the two remaining uranium mills in Utah. (Photograph is courtesy of Michelle Rehmann of International Uranium (USA) Corporation)
The construction, operation and reclamation of uranium mill tailings impoundments are regulated by both the Environmental Protection Agency (EPA) under 40 CFR Part 61 Subpart W (NESHAPs) and by the Nuclear Regulatory Commission (NRC) under 10 CFR 40 (Domestic Licensing of Source Material). In addition, various NRC regulatory guides, staff technical positions (STPs) and NUREG documents also regulate the construction, operation and reclamation of uranium mill tailings impoundments.