UNITED STATES ANTIMONY CORP

United States Antimony Corporation (NYSE: UAMY) operates as a vertically integrated mining and processing company focused on antimony, zeolite, and precious metals. The company maintains its website at https://www.usantimony.com and employs 100 full-time employees and one part-time employee across operations in Montana, Idaho, Mexico, Alaska, and Canada.

The company's core business centers on mining, procuring, processing, and selling antimony products in various forms including antimony trioxide, antimony metal ingots, and antimony trisulfide. Antimony is designated as a critical mineral by the U.S. Government and serves applications in flame-retardant systems for plastics, rubber, and textiles, as well as in bearings, storage batteries, and ordnance. The antimony segment represents the company's primary revenue driver, with operations at a facility in Montana's Burns Mining District and two processing facilities in Mexico through subsidiaries USAMSA and ADM.

The zeolite segment operates through Bear River Zeolite Company in Preston, Idaho, mining and processing zeolite for water filtration, sewage treatment, animal nutrition, environmental cleanup, and industrial applications. The company also generates revenue from precious metals, primarily gold and silver recovered during antimony ore processing.

United States Antimony is the only fully vertically integrated antimony mining and processing operation in the United States and operates the only permitted antimony smelter domestically. In 2025, the company secured a five-year sole-source contract with the U.S. Defense Logistics Agency valued at up to $248 million for antimony metal ingots and executed a five-year sales agreement with an industrial customer for antimony trioxide. The company has expanded its asset base significantly, acquiring mining claims in Alaska, Montana, Ontario Canada, and the southeastern United States prospective for antimony, tungsten, cobalt, and other critical minerals. Recent developments include acquiring a flotation facility in Radersburg, Montana, entering a joint venture with Americas Gold and Silver Corporation for hydrometallurgical processing, and receiving $27 million in Department of War funding under the Defense Production Act for antimony production expansion.