United States Antimony Reports Progress on Trisulfide and the Gold and Silver Production

Thompson Falls, Montana. 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.

Flotation of stibnite
Flotation of stibnite to make antimony trisulfide for center fired ordnance

May production for USAC is as follows:

ProductMay 2020 sales
Antimony pounds108,969
Zeolite short tons1,129

The average April Rotterdam price of antimony metal was $5,757.94 per metric ton or $2.598 per pound. USAC’s May average sales price per pound of antimony contained was $3.112 per pound.

CEO John Lawrence said “The trisulfide that has been produced looks good, and the team is anxious to continue on the cyanide leach of the gold and silver Los Juarez ore now that they will have a thickener.”