EXHIBIT 21.1
Subsidiaries of Registrant, as of December 31, 2022
| Name: |
| Jurisdiction: |
| Percentage Ownership: |
| Bear River Zeolite Company |
| [Idaho] |
| [100%] |
| Antimonio de Mexico, S.A. de C.V. |
| Mexico |
| [100%] |
| United States Antimony, Mexico, S.A. de C.V. |
| Mexico |
| [100%] |
| Stibnite Holding Company US Inc. |
| Montana |
| 100% |
| Antimony Mining and Milling US LLC |
| Montana |
| 100% |
| AGUA Mines, Inc. |
| Montana |
| 100% |