United States Antimony Corporation (USAC) NYSE (uamy) is a rapidly growing natural resource company that is increasing its raw material supply of antimony from properties in Mexico and third parties around the world. USAC has produced various antimony products since 1969 and is a fully integrated mining, transportation, milling, smelting, and selling company.  USAC operates the only significant antimony smelter in the United States and it is in a "sold out" condition. The Company has proven experience in underground and open pit mining, flotation and gravimetric milling, crushing and screening, dry grinding, cyanide leaching, precious metal refining, pyro-metallurgy, and marketing.

Operations include a smelter and a precious metal refinery in Montana, and a smelter and three mills in Mexico. Three Mexican properties supply direct shipping ore (DSO) or mill feed for the Mexican operations. The Los Juarez property and mill at Puerto Blanco are being permitted to start gold and silver production that will supplement the antimony values and identify the Company as a "precious metal producer." 

USAC owns 100% of the Bear River Zeolite, Corp. mine in southeast Idaho that management  regards as one of the best zeolite properties in the world due to its high cation exchange capacity, low sodium content, hardness,  uniformity, high potassium content, large surface area, and low clay and impurity content.

  • USAC Corporate Offices and Plant,Thompson Falls, Montana
  • Madero Smelter, Coahuila, Mexico
  • Puerto Blanco Flotation/Gravity Mill, Guanajuato, Mexico
  • Antimony Oxide Ore Gravity Mill, Wadley, San Luis Potosi, Mexico
  • Mining - Los Juarez Property, Queretaro, Mexico
  • Mining - Soyatal District, Queretaro, Mexico
  • Mining - Sierra Guadalupe, Zacetecas, Mexico
  • Mining - Guadalupana, Queretaro, Mexico
  • Bear River Zeolite Pit, Preston, Idaho
  • Bear River Zeolite Plant, Preston, Idaho
USAC Corporate Offices and Plant,Thompson Falls, Montana1 Madero Smelter, Coahuila, Mexico2 Puerto Blanco Flotation/Gravity Mill, Guanajuato, Mexico3 Antimony Oxide Ore Gravity Mill, Wadley, San Luis Potosi, Mexico4 Mining - Los Juarez Property, Queretaro, Mexico5 Mining - Soyatal District, Queretaro, Mexico6 Mining - Sierra Guadalupe, Zacetecas, Mexico7 Mining - Guadalupana, Queretaro, Mexico8 Bear River Zeolite Pit, Preston, Idaho9 Bear River Zeolite Plant, Preston, Idaho10

SALES estimates for
JULY 2017



Antimony pounds 159,936
Zeolite tons 833
Silver ounces Accruing for shipment September
Gold ounces 7.080 shipped + accruing
for shipment September





August 11, 2017. Thompson Falls, Montana. United States Antimony Corporation

(“USAC”, NYSE American “UAMY”) will host an investor call at 4:15 P. M. EDT on Monday, August 14, 2017 to review the 2017 second quarter 10Q.

Conference Title:  United States Antimony Corp.

Conference ID:  8277118

Dial In Information:

Toll free: 1-800-289-0496

International:  1-719-457-6931



August 7, 2017. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE American “UAMY”) reported major cost reductions at its Mexican antimony smelter. As a result of metallurgical changes, the Company has drastically cut costs and increased production rates. The approximate reductions for fuel costs are 50%, electricity 55%, and reagents 75%. Maintenance and other costs are being evaluated. Extra manpower will be assigned to processing Los Juarez production. The Company expects to see these lower costs impacting the Company’s reported financials beginning in Q3 2017.

These cost reductions are coming at an opportune time due to the increasing mine production from Mexico. Production at Wadley is growing with more miners. USAC intends to use its Los Juarez explosives license at Soyatal which will save money, time, and accelerate the production of direct shipping ore from that property. Guadalupe is undergoing road work to re-establish the production of high-grade concentrates.

At the end of July, the inventory of Mexican and North American production awaiting smelting in Montana is now estimated at $550,000.   

Following instructions by SEMARNAT (Mexican equivalent of the EPA) to change one item in our application for the cyanide permit for the Los Juarez gold-silver-antimony project, the Company resubmitted its application in Mexico City on 31 July 2017. Approval is expected imminently.

At the beginning of July 2017, the average Rotterdam price of Grade I antimony metal per metric ton was $8,450 ($3.832 per pound), and by the end of July, the price had decreased to $8,200 ($3.719 per pound), a decrease of 2.9% which is normal due to summer vacation schedules for many plants.  

Zeolite sales were lower in July 2017 due to seasonal scheduling and scheduled maintenance work. The new sales program has resulted in six new multiple truckload customers in the United States and two in Canada.

CEO John Lawrence said, “Antimony remains a core business of USAC and the cost reductions, increase in Mexican production, and the upcoming liquidation of the $550,000 in antimony inventory should increase margins and provide funding for the start-up of the Los Juarez cyanide leach circuit.”


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