United States Antimony Corporation ("USAC") was incorporated in Montana in January 1970 to mine and produce antimony products. In December 1983, we suspended antimony mining operations but continued to produce antimony products from domestic and foreign sources. On August 19, 2005 USAC formed Antimonio de Mexico, S. A. de C. V. to explore and develop antimony and silver deposits in Mexico. Bear River Zeolite Company ("BRZ") was incorporated in 2000, and it mines and produces zeolite in southeastern Idaho. Our principal business is the production and sale of antimony and zeolite products.