United States Antimony Corporation is engaged in the production and sale of antimony, precious metals, primarily gold and silver, and zeolite products. The Company has two reportable segments: antimony and zeolite. Its antimony segment consists of its facility located in the Burns Mining District of Sanders County in Montana that processes ore primarily into antimony oxide, antimony metal, antimony trisulfide, and precious metals, and its two facilities in its US Antimony de Mexico, S.A. de C.V. (USAMSA) subsidiary located in Mexico that process ore primarily into antimony metal and a lower grade of antimony oxide. Its zeolite segment includes its vertically integrated Bear River Zeolite (BRZ) facility located in Preston, Idaho that mines, processes, and sells zeolite. Its zeolite has been used in soil amendment and fertilizer, water filtration, and sewage treatment. The Company also operates Fostung Tungsten Property located near Sudbury, Ontario, Canada, near the town of Espanola.