Checked
Mines in Montana
Mines reported to the Mine Safety and Health Administration
- Mines listed
- 255
- Active
- 66
- Employees
- 4,109
- Accidents reported in 2025
- 90
Mines are listed from MSHA's mine data, excluding mines recorded as abandoned. Accident counts are reports filed with MSHA for the calendar year, including injuries and illnesses at the mine, and are counts only. Operator names are shown only when they are companies or agencies.
Largest mines by employees
Swipe the table sideways to see more columns.
| Mine | Type | Status | Employees | Accidents 2025 |
|---|---|---|---|---|
| Stillwater Mine | Metal/nonmetal, Underground | Active | 1,123 | 7 |
| East Boulder Mine | Metal/nonmetal, Underground | Active | 446 | 15 |
| Continental Mine | Metal/nonmetal, Surface | Active | 423 | 12 |
| Rosebud Mine & Crusher/Conveyor | Coal, Surface | Active | 290 | 2 |
| Spring Creek Mine | Coal, Surface | Active | 268 | 5 |
| Bull Mountains Mine No 1 | Coal, Underground | Active | 221 | 11 |
| Trident Plant & Quarry | Metal/nonmetal, Facility | Active | 82 | 5 |
| Montana City Plant | Metal/nonmetal, Facility | Active | 80 | 4 |
| Three Forks Mill | Metal/nonmetal, Facility | Active | 76 | 6 |
| Barretts Mill | Metal/nonmetal, Surface | Active | 62 | 1 |
| Golden Sunlight Mines Inc | Metal/nonmetal, Surface | Active | 54 | 1 |
| Garnet USA LLC | Metal/nonmetal, Surface | Active | 50 | 2 |
| Indian Creek Lime Plant & Quarry | Metal/nonmetal, Surface | Active | 39 | 3 |
| Sappington Mill | Metal/nonmetal, Facility | Active | 39 | 1 |
| Yellowstone Mine | Metal/nonmetal, Surface | Active | 35 | 1 |
| Decker Mine | Coal, Surface | Active | 28 | 0 |
| E S Stone and Structure Mobile 3 | Metal/nonmetal, Surface | Active | 19 | 0 |
| Warren Quarry | Metal/nonmetal, Surface | Active | 17 | 0 |
| Absaloka Mine | Coal, Surface | Active | 14 | 0 |
| Fisher Industries Plant 19 | Metal/nonmetal, Surface | Active | 13 | 1 |
| Belgrade Pit | Metal/nonmetal, Surface | Active | 12 | 0 |
| Gem Mountain | Metal/nonmetal, Surface | Intermittent | 12 | 0 |
| Regal Mine | Metal/nonmetal, Surface | Active | 12 | 0 |
| Silver Bow Mine | Metal/nonmetal, Underground | NonProducing | 11 | 0 |
| United Materials/Conc. Agg. Wash | Metal/nonmetal, Surface | Active | 10 | 0 |
| Moose Mountain | Metal/nonmetal, Surface | Intermittent | 9 | 0 |
| Portable Crusher #1 | Metal/nonmetal, Surface | Active | 9 | 0 |
| Fawcett Pit | Metal/nonmetal, Surface | Intermittent | 8 | 0 |
| McGregor | Metal/nonmetal, Surface | Intermittent | 8 | 1 |
| Fisher Industries Plant 15 | Metal/nonmetal, Surface | Active | 7 | 0 |
| Fisher Industries Plant 20 | Metal/nonmetal, Surface | Intermittent | 7 | 0 |
| Montana Sand and Gravel | Metal/nonmetal, Surface | Intermittent | 7 | 0 |
| Montana Solid Rock Quarry #4 | Metal/nonmetal, Surface | Active | 7 | 0 |
| Montana Stibnite Hill Mine | Metal/nonmetal, Surface | Intermittent | 7 | 0 |
| Pipestone Quarry | Metal/nonmetal, Surface | Active | 7 | 1 |
| Prince Portable Crusher II | Metal/nonmetal, Surface | Intermittent | 7 | 0 |
| Savage Mine | Coal, Surface | Active | 7 | 2 |
| Treasure State Concrete | Metal/nonmetal, Surface | Intermittent | 7 | 0 |
| Wolf Mountain Coal-Spring Creek | Coal, Facility | Active | 7 | 0 |
| Bainville | Metal/nonmetal, Surface | Active | 6 | 1 |
| Contact Concentrator | Metal/nonmetal, Facility | Intermittent | 6 | 0 |
| Crusher | Metal/nonmetal, Surface | Intermittent | 6 | 0 |
| Crusher #1 | Metal/nonmetal, Surface | Active | 6 | 0 |
| Crusher #4 | Metal/nonmetal, Surface | Intermittent | 6 | 0 |
| DMC Mine | Metal/nonmetal, Surface | Intermittent | 6 | 0 |
| Fisher Industries Plant 40 | Metal/nonmetal, Surface | Active | 6 | 0 |
| Jeffery Portable Crusher | Metal/nonmetal, Surface | Intermittent | 6 | 0 |
| KH Kolar Pit | Metal/nonmetal, Surface | Intermittent | 6 | 0 |
| Prince Portable | Metal/nonmetal, Surface | Temporarily Idled | 6 | 0 |
| 4 Mile | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| Bar Z | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| Crusher Plant | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| Camas Site #1 | Metal/nonmetal, Surface | Active | 5 | 0 |
| Clarks Fork Quarry | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| Crusher | Metal/nonmetal, Surface | Active | 5 | 0 |
| Crusher #2 | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| GCP Mobile | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| Glacier Lake Sand & Gravel | Metal/nonmetal, Surface | Active | 5 | 0 |
| JTL Portable Crusher #3 | Metal/nonmetal, Surface | Active | 5 | 0 |
| Jones Quarry | Metal/nonmetal, Surface | Active | 5 | 0 |
| Metso HP 200 Cone Plant Gravel Crusher | Metal/nonmetal, Surface | Intermittent | 5 | 1 |
| Mullan Road Wash Plant | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| Portable Crusher | Metal/nonmetal, Surface | Active | 5 | 1 |
| Revenue Mine | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| Spomac/Fabtech Wash Plant #4050 | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| West Crusher #7 | Metal/nonmetal, Surface | Intermittent | 5 | 0 |
| Crusher #1 Jaw #4069 | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Crusher Operation #2 | Metal/nonmetal, Surface | Active | 4 | 0 |
| Capital Concrete - Diehl Pit | Metal/nonmetal, Surface | Active | 4 | 0 |
| Centennial Sand and Gravel | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| FC Portable Crusher 1 | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Granite Concrete Product LLC | Metal/nonmetal, Surface | Active | 4 | 0 |
| Havre Sand & Gravel, Inc | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Judith Basin Co Portable Crusher | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Kalispell Portable Plant | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| La Salle S&g | Metal/nonmetal, Surface | Active | 4 | 0 |
| Logan Screen | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Portable Crusher #1 | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Perma Quarry | Metal/nonmetal, Surface | Active | 4 | 0 |
| Port #1 | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Portable | Metal/nonmetal, Surface | Active | 4 | 0 |
| Portable Crew #3 | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Portable Crusher | Metal/nonmetal, Surface | Intermittent | 4 | 2 |
| Portable Crusher #1 | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Portable Crusher #1 | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Portable Screen | Metal/nonmetal, Surface | Active | 4 | 0 |
| Rauschy | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Ramage Pit 2 | Metal/nonmetal, Surface | Intermittent | 4 | 0 |
| Red Pine Mine | Metal/nonmetal, Underground | NonProducing | 4 | 0 |
| TMC Crusher | Metal/nonmetal, Surface | Active | 4 | 0 |
| Valley Sand & Gravel (Portable) | Metal/nonmetal, Surface | Active | 4 | 0 |
| Wash Plant | Metal/nonmetal, Surface | Active | 4 | 0 |
| Yogo Sapphire Mine | Metal/nonmetal, Underground | NonProducing | 4 | 0 |
| Yoder Gravel | Metal/nonmetal, Surface | Active | 4 | 0 |
| 21 Mining | Metal/nonmetal, Surface | Temporarily Idled | 3 | 0 |
| Anaconda Bench Sapphire Mine | Metal/nonmetal, Surface | Active | 3 | 0 |
| Blaine County Screen | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Beartooth Pit | Metal/nonmetal, Surface | Active | 3 | 0 |
| Cowboy Cliff Quarry | Metal/nonmetal, Surface | Temporarily Idled | 3 | 0 |
| Carlson Wash Plant | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| DBRM Pit-North | Metal/nonmetal, Surface | Intermittent | 3 | 1 |
| E S Stone and Structure Mobile 2 | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| GCP Mobile 2 | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Griffen Site | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Helena Sand & Gravel-Portable Wash Plant | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Helena Sand & Gravel Portable Crusher | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Ironside Stone Works Quarry | Metal/nonmetal, Surface | Active | 3 | 0 |
| James Crushing | Metal/nonmetal, Surface | Temporarily Idled | 3 | 0 |
| Lingshire Gypsum Mine | Metal/nonmetal, Surface | Temporarily Idled | 3 | 0 |
| Michels | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Mikesell Pit | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Mill Creek | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Mobile Crusher | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Montana Solid Rock Quarry #3 | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Montanore Project | Metal/nonmetal, Underground | NonProducing | 3 | 0 |
| Portable Crew #2 | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Portable Crusher | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Portable Operations 2 | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Riverside Contracting Inc | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Sunriver | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Skookum | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| South Pit | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| T-Bend Crushing Plant | Metal/nonmetal, Surface | Active | 3 | 0 |
| Thompson River Ready Mix Inc. | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Troy Mine | Metal/nonmetal, Underground | NonProducing | 3 | 0 |
| Valley Pit | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Vredenburg Pit | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Welles 1 | Metal/nonmetal, Surface | Active | 3 | 0 |
| Welles 2 | Metal/nonmetal, Surface | Active | 3 | 0 |
| Wirth Quarry | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Wolf Point Sand & Gravel | Metal/nonmetal, Surface | Active | 3 | 0 |
| YCI McCLOSKEY C3 | Metal/nonmetal, Surface | Intermittent | 3 | 0 |
| Atkins Pit | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Barber Pit | Metal/nonmetal, Surface | Active | 2 | 0 |
| Beaver Creek Quarry | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Billings Pit | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Black Butte Mine | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Blaine County Crusher | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Castle Rock | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Ccrd Annihilater Tsab-643-07 | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Croell Portable #1 | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Crusher Plant #1 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Cutting Edge Excavation, LLC | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| District #3 Screening Plant | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Doeden Construction Company | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Draper Ranch Co. | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| EL Jay 45 portable | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| El Jay | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| GCP Mobile 3 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Gallatin Gravel | Metal/nonmetal, Surface | Active | 2 | 1 |
| Glacier County Crusher | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Glacier Mobile 1 | Metal/nonmetal, Surface | Active | 2 | 0 |
| Glacier Mobile 2 | Metal/nonmetal, Surface | Active | 2 | 0 |
| Glacier Mobile 3 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Goose Bay Wash Plant | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Grizzly | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Henderson | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Holman Pit | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| J & J 1 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| J & J 2 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Jarrett Pit | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Jaw Crusher | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Kodiak Site | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Lake County Commissioners-Crusher | Metal/nonmetal, Surface | Active | 2 | 0 |
| Lewellen Enterprises LLC | Metal/nonmetal, Surface | Active | 2 | 0 |
| Merriman Quarry | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Madison Slate Quarry | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Metso HP 200 | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Millennium Materials | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Missoula Crusher #427 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Mobile | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Montana Antique | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Noxon Pit | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| O'Brien Pit | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Old Corvallis Pit | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Portable Crusher #1 | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Portable Plant # 9 | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Paveco, LLC | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Port #2 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Portable #2 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Portable #3 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Portable #4 | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Portable 45 | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Portable 45 200 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Portable Crew #1 | Metal/nonmetal, Surface | Intermittent | 2 | 2 |
| Portable Crusher | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Portable Crusher | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Portable Screen #3 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Prewitt | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| RBC Crusher #1 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Randall Pit | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Read Screen All | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Rocky Mountain Gravel | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| STE Crushing Spread #1 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| STE Crushing Spread #2 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Sandry Pit | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Screen Plant | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Screen/Crusher 1 | Metal/nonmetal, Surface | Intermittent | 2 | 0 |
| Smail Portable | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
| Stoltze Crusher | Metal/nonmetal, Surface | Temporarily Idled | 2 | 0 |
Other mines
No employees reported
- 212 Sand and Gravel · Intermittent
- Barry Hatler · Intermittent
- Box S Pit · Intermittent
- D-Rockboyz Quarry · Intermittent
- Dog Lake Quarry · Active
- DR Sand & Gravel · Intermittent
- Edgar Ledge Rock · Intermittent
- Far West Pit · Intermittent
- Forsyth Sand & Gravel · Temporarily Idled
- Fossum Materials Wash Plant · Intermittent
- Griffith Excavating, Inc. · Temporarily Idled
- Havre Sand & Gravel · Intermittent
- Ivanoff Pit · Temporarily Idled
- J. C. Crusher · Intermittent
- Jeffery Wash Plant · Intermittent
- Krueger Pit · New Mine
- Matthews Mine Pit · Intermittent
- Merriman Quarry · New Mine
- Munis Pit · Intermittent
- Plains Ready Mix, Inc. · Intermittent
- Plant #1 · Intermittent
- Portable 2 · Intermittent
- Portable Crusher · Intermittent
- Portable Number One · Intermittent
- Portable Pug Mill · Temporarily Idled
- Purcell Sand & Gravel Inc · Intermittent
- Quarter Circle One · Intermittent
- R E Miller and Sons · Intermittent
- R. E. Miller & Sons - Portable (Mobile G · Intermittent
- Road Dept · Intermittent
- Roe Sand & Gravel · Intermittent
- Rosebud County · Active
- Screen S190 · New Mine
- Sullivan Wash Plant · Intermittent
- Titan Wash Plant · Intermittent
- TMC Inc. · Intermittent
- TMC Track Jaw · Intermittent
- TMC Track Screen · Intermittent
- Tract 2 Site · Intermittent
- Treasure Mine · Active
- Truman Pit · Intermittent
- TW-003 · Intermittent
- US Antimony Critical Minerals Mill · Intermittent
- Varner Pit · Temporarily Idled
- Waid Rock Quarry · Intermittent
- Wash Plant · Intermittent
- Wash Plant · Temporarily Idled
- Wash Plant #3 · Intermittent
- Wash Plant Site · Intermittent
- Washplant · Intermittent
- Welles 3 · Active
- Welles Wash Plant · Intermittent
- West Wash Plant #12 · Intermittent
- Woods Bay Sand & Gravel I · Intermittent
- Worden Gravel Pit · Temporarily Idled
Source: Mine Safety and Health Administration, Open Government Data