| 2009 Bentonite Production and Employment | ||
| Tons | Employees | |
| Wyoming Bentonite Mining | 2,473,716 (mined) | 603 |
| 3,621,855 (plant) | ||
| Lovell | 371,500 | 75 |
| American Colloid Co. | ||
| Belle/Colony Mine | 942,806 | 92 |
| American Colloid Co. | ||
| Upton | shut down | |
| American Colloid Co. | ||
| Yellowtail Mine | 222,456 | 19 |
| American Colloid Co. | ||
| Colony Mine/Mill | 368,837 | 84 |
| Bentonite Performance Minerals | ||
| Lovell | 488,392 | 64 |
| Bentonite Performance Minerals | ||
| M-I SWACO Mine/Mill | 404,195 | 101 |
| M-I SWACO | ||
| Stucco Mine/Mill | 247,889 | 42 |
| Wyo- Ben | ||
| Sage Creek Mill | 172,655 | 25 |
| Wyo-Ben | ||
| Lucerne Mill | 0 | 5 |
| Wyo-Ben | ||
| Kaycee Mine | 497,796 | 13 |
| Black Hills Bentonite Corp. | ||
| Oshoto Mine | 77,468 | 4 |
| Black Hills Bentonite Corp. | ||
| Thornton Plant | 73,448 | 8 |
| Black Hills Bentonite Corp. | ||
| Mills Plant | 70,217 | 23 |
| Black Hills Bentonite Corp. | ||
| Harry Thorson Plant | 174,291 | 13 |
| Black Hills Bentonite Corp. | ||
| Casper Plant | 201,875 | 18 |
| Black Hills Bentonite Corp. | ||
| Worland Plant | 166,283 | 10 |
| Black Hills Bentonite Corp. | ||
| TenSleep Mine | 166,283 | 6 |
| Black Hills Bentonite Corp. | ||
| Lovell Mill | Not Listed | Not Listed |
| CETCO | Not Listed | Not Listed |
| BCS & MK Mines | Not Listed | Not Listed |
| Kenneth E. Tanner | Not Listed | Not Listed |
| NOV Minerals | 26,856 | 10 |
| National Oilwell/VARCO | ||
| Bucknum | 400 | 10 |
| US Bentonite Processing | ||