THOMPSON FALLS, MT / ACCESSWIRE / June 1, 2020 / United States Antimony Corporation (“USAC”)(NYSE American:UAMY) reported a thickener circuit is being constructed on-site at the Puerto Blanco mill in Guanajuato, Mexico to increase the production rate and control the pulp density of ore to be processed. During this time, the Company is working to complete the six samples for the Defense Logistics Agency (DLA) of the Department of Defense. This involves mining and milling that should be done prior to the completion of the thickener. The samples will be used to determine whether USAC can consistently meet the military specification for antimony trisulfide. Mil spec trisulfide commands a higher price than non-spec product.