| Anaconda Minerals Company | Anaconda Stillwater | 4/15/1982 | MINING | USFS | Stillwater |
| Camp Dresser & McKee, Inc. | Burns Creek Mine | 5/10/1981 | MINING | Private | Dawson |
| Camp Dresser & McKee, Inc. | Anaconda Stillwater | 10/24/1981 | MINING | USFS | Stillwater |
| Camp Dresser & McKee, Inc. | Anaconda Stillwater | 1/15/1981 | MINING | USFS | Stillwater |
| Camp Dresser & McKee, Inc. | Anaconda Stillwater | 8/3/1981 | MINING | USFS | Stillwater |
| Camp Dresser & McKee, Inc. | Anaconda Stillwater | 1/15/1981 | MINING | USFS | Stillwater |
| Golden Sunlight Mines, Inc. | Golden Sunlight | 7/29/1994 | MINING | BLM | Jefferson |
| Golden Sunlight Mines, Inc. | Golden Sunlight | 11/6/1990 | MINING | BLM | Jefferson |
| Golden Sunlight Mines, Inc. | Golden Sunlight | 5/1/1991 | MINING | BLM | Jefferson |
| Golden Sunlight Mines, Inc. | Golden Sunlight | 1/18/1996 | MINING | BLM | Jefferson |
| Golden Sunlight Mines, Inc. | Golden Sunlight | 4/2/1996 | MINING | BLM | Jefferson |
| Golden Sunlight Mines, Inc. | Golden Sunlight | 4/2/1996 | MINING | BLM | Jefferson |
| Santa Fe Pacific Gold Corp. | Elkhorn Mine Project | 10/25/1993 | MINING | USFS | Jefferson |
| Santa Fe Pacific Gold Corp. | Elkhorn Mine Project | 10/25/1994 | MINING | USFS | Jefferson |
| Santa Fe Pacific Gold Corp. | Elkhorn Mine Project | 12/15/1994 | MINING | USFS | Jefferson |
| Electrical Consultants, Inc. | Tongue River Electric Cooperative | 8/28/2008 | INFRASTRUCTURE | FEMA | Powder |
| Robert Scott Environmental Services | Crossover Transmission Project | 11/10/2006 | INFRASTRUCTURE | Crow Indian Tribe | Big Horn |
| Klepfer Mining Services, LLC | Butte Highland Exploration Project | 1/12/2010 | MINING | USFS | Silver Bow |
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