Mine · Sweet Grass County, Montana, United States
East Boulder Mine
East Boulder Mine is a mine in Sweet Grass County, Montana, United States, owned by Sibanye Stillwater Limited.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Name in the source | EAST BOULDER MINE | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Location | Sweet Grass County | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Status | Operating (active) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Commodities | platinum group elements (mainly platinum group elements) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Owner | Sibanye Stillwater Limited (controls the operator) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Operator | Stillwater Mining Company | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Employees | 358 people (annual average, in 2025) | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Mine type | Underground | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
| Coordinates | 45.5036, -110.0858 | MSHA Mines Data Set · Public domain · checked 24 Oct 2026 |
Research on this mine and its owner.Who owns it up to the parent company, its permits, resources and offtake, and an introduction to the owner.
Request researchHow its owner compares
Sibanye Stillwater Limited owns 2 of the 2,675 mines in the United States in our data with a named owner; 200 owners have more. Counts cover the mines in our data that name an owner, holder or operator; an asset with several owners counts for each.
| Owner in United States | Rank | Mines | Share |
|---|---|---|---|
| Alpha Metallurgical Resources Inc | 1st | 56 | 2.1% |
| Sev.en Global Investments a.s. | 2nd | 50 | 1.9% |
| Rosebud Mining Company | 3rd | 40 | 1.5% |
| Martin Marietta Materials Inc | 4th | 29 | 1.1% |
| Metinvest B V | 4th | 29 | 1.1% |
| Sibanye Stillwater Limited | 201st | 2 | <0.1% |
Owner, operator and place
More from Sibanye Stillwater Limited
- Stillwater Minemine
Other mines in Montana
Data on this page
- MSHA Mines Data Set. MSHA Mines Data Set, Public domain.