Mines and quarries in Crook County, WY
13 mines not abandoned in Crook County, WY, in the MSHA file of October 2, 2026.
| Mine | Mine ID | Industry group | Status since |
|---|---|---|---|
| Belle/Colony Mine American Colloid Company | 4800888 | Nonmetal | Jan 28, 1992 |
| BPM Colony Mill Bentonite Performance Minerals, LLC | 4800070 | Nonmetal | Nov 18, 1991 |
| BPM Colony Mine Bentonite Performance Minerals LLC | 4800889 | Nonmetal | Nov 19, 1991 |
| COLONY EAST MILL American Colloid Company | 4800594 | Nonmetal | Jan 1, 2025 |
| COLONY WEST MILL American Colloid Company | 4800245 | Nonmetal | Oct 30, 1987 |
| Crago Mine Ramsey Hill Exploration LLC | 4801848 | Sand and gravel | Dec 12, 2024 |
| Crusher Iron Creek Services, LLC | 4801894 | Sand and gravel | Nov 21, 2025 |
| Crusher 2 Croell, Inc. | 4801698 | Sand and gravel | Dec 4, 2025 |
| Impactor Spread Quality Agg & Construction, Inc | 4801816 | Sand and gravel | Jul 2, 2025 |
| Inertia Crusher Ramsey Hill Exploration LLC | 4801853 | Sand and gravel | Mar 6, 2026 |
| Moorcroft Mine Ramsey Hill Exploration L.L.C. | 4801905 | Sand and gravel | Dec 8, 2025 |
| QAC #2 Quality Agg & Construction, Inc | 4801729 | Sand and gravel | Aug 26, 2026 |
| QAC #4 Quality Agg & Construction, Inc | 4801769 | Sand and gravel | Sep 21, 2026 |
Alphabetical order — this site ranks no one. Mines that are not abandoned in the MSHA file of October 2, 2026. Sole proprietors are found by mine ID only. How to read this.