EXHIBIT 21.1
| Subsidiaries of Registrant as of December 31, 2023 | ||
|
|
|
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| Name: |
| Jurisdiction |
| Bear River Zeolite Company |
| Idaho |
| Antimonio de Mexico, S.A. de C.V. |
| Mexico |
| United States Antimony, Mexico, S.A. de C.V. |
| Mexico |
| Stibnite Holding Company US Inc. |
| Montana |
| Antimony Mining and Milling US LLC |
| Montana |
| AGUA Mines, Inc. |
| Montana |
| Lanxess Laurel de Mexico, S.A. de C.V. |
| Mexico |