|Owner||Mill and Heap Leach1 Facility name||County, state (existing and planned locations)||Capacity (short tons of ore per day)||Operating status at end of the year|
|Anfield Resources||Shootaring Canyon Uranium Mill||Garfield, Utah||750||standby||standby||standby||standby||standby|
|EFR White Mesa LLC||White Mesa Mill||San Juan, Utah||2,000||operating-processing alternate feed||operating-processing alternate feed||standby||operating-processing alternate feed||standby|
|Energy Fuels Wyoming Inc||Sheep Mountain||Fremont, Wyoming||725||undeveloped||undeveloped||undeveloped||undeveloped||undeveloped|
|Kennecott Uranium Company/Wyoming Coal Resource Company||Sweetwater Uranium Project||Sweetwater, Wyoming||3,000||standby||standby||standby||standby||standby|
|1 Heap leach solutions: The separation, or dissolving-out from mined rock, of the soluble uranium constituents by the natural action of percolating a prepared chemical solution through mounded (heaped) rock material. The mounded material usually contains low grade mineralized material and/or waste rock produced from open pit or underground mines. The solutions are collected after percolation is completed and processed to recover the valued components.
Notes: Capacity for 2021. An operating status of Operating indicates the mill usually was producing uranium concentrate at the end of the period.
Source: U.S. Energy Information Administration: Form EIA-851A, Domestic Uranium Production Report (2017–21)