Name

  ​ ​ ​

Jurisdiction

Bear River Zeolite Company

​

Idaho

Antimonio de Mexico, S.A. de C.V.

​

Mexico

US Antimony de Mexico, S.A. de C.V.

​

Mexico

Stibnite Holding Company US Inc.

​

Montana

Antimony Mining and Milling US LLC

​

Montana

AGAU Mines, Inc.

​

Montana

Lanxess Laurel de Mexico, S.A. de C.V.

​

Mexico

Great Land Minerals, LLC

​

Delaware

Denali Minerals, LLC

​

Delaware

Alaska Antimony LLC

​

Alaska

UAMY Cobalt Corporation

​

Ontario, Canada

TFRE Holdings LLC

​

Montana

TFPROP LLC

​

Montana