THOMPSON FALLS, MT / ACCESSWIRE / November 29, 2017 / United States Antimony Corporation (“USAC”) (NYSE American: UAMY) reported that SEMARNAT (the equivalent of the U.S. EPA) has issued USAMSA (a wholly owned subsidiary of USAC) the permit to construct a cyanide leach plant for the Puerto Blanco mill in Guanajuato, Mexico. The cyanide leach plant is designed to recover gold and silver from the flotation mill tailings of the Los Juarez gold-silver-antimony deposit in Queretaro, Mexico.