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Table 3. U.S. uranium mills and heap leach facilities by owner, location, capacity, and operating status
  Operating status at the end of
Owner Mill and Heap Leach[1] Facility name County, state (existing and planned locations) Capacity (short tons of ore per day) 2022 First-quarter 2023 Second-quarter 2023 Third-quarter 2023 Fourth-quarter 2023
Anfield Resources Inc. Shootaring Canyon Uranium Mill Garfield, Utah 750 standby standby - - -
EFR White Mesa LLC White Mesa Mill San Juan, Utah 2,000 operating   operating - - -
Energy Fuels Wyoming Inc Sheep Mountain Fremont, Wyoming 725 undeveloped undeveloped - - -
Kennecott Uranium Company/Wyoming Coal Resource Company Sweetwater Uranium Project Sweetwater, Wyoming 3,000 standby standby - - -
Total capacity: 6,475
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 the solutions are processed to recover the valued components.
- = No data reported
Notes: Capacity for the first-quarter of 2023. An operating status of operating indicates the mill usually was producing uranium concentrate at the end of the period.
Data source: U.S. Energy Information Administration: Form EIA-851A, Domestic Uranium Production Report (Annual), and Form EIA-851Q, Domestic Uranium Production Report (Quarterly)