Robert W. Gregory
Robert Gregory
Geologist: Uranium
(307) 766-2286 Ext. 237
robert.gregory@wyo.gov

Origin of Uranium Deposits
Most of Wyoming’s uranium ore deposits occur in the Paleocene and Eocene sandstones of Tertiary basins. Large amounts of uranium have been mined from roll-front deposits in the Gas Hills, Shirley Basin, Crooks Gap, Southern Powder River Basin, and Pumpkin Buttes mining areas. Roll-front uranium deposits develop as ground water migrates through a porous and permeable sandstone or conglomerate (aquifer). Click here for more information	Roll-front Uranium deposit
The Nuclear Fuel Cycle
Uranium is the primary fuel for nuclear power plants. To be used as fuel, uranium must be extracted from its occurrence in the earth, milled, refined, and processed into a form from which its energy can be harnessed. As uranium decays, it releases energy in the form of heat. This heat is then used to create steam to turn turbine generators in the same way coal-fired or hydroelectric plants do. Click here for more information	Settling tank

Wyoming State Geological Survey -- Geology By Subject