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
March 2018


Antimony pounds


Gold ounces


Silver ounces


Zeolite short tons



Commodity prices for February:



1 March 18

26 March 18


Antimony metal









March average















Monday April 2, 2018 reviewing the 2017 10K financials

Conference Title:  United States Antimony Corp. 
Remote Replay available for 7 days:
Conference ID/Passcode:  9600909
Toll free:  1-888-203-1112
International:  1-719-457-0820



April 2, 2018. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE American “UAMY”) reported 90,000 pounds of antimony production from Mexico that has very low impurities. In Montana, this production is converted to antimony trioxide a flame retardant and also metal that is used in lead alloys such as ordnance in Montana. Antimony raw materials from the North American source cannot be converted to metal due to impurities. We negotiated a new supply agreement with our North American raw material supplier that will result in cost reductions of more than $.40 per pound.  This could result in a cash savings of approximately $600,000 in 2018 for us. 

Progress on the construction of the cyanide leach plant for the Los Juarez gold-silver-antimony deposit in Queretaro, Mexico continues with the preparation of the tailings pond, leach plant floor, and carbon circuit. Initial production is anticipated in Q4 2018.

BRZ zeolite sales for water filtration, animal feed, air filtration, and numerous other applications were up sharply in March.

CEO John Lawrence said “We are excited about the increased cash flow from the new antimony supply agreement, increased Mexican antimony production, and increased BRZ zeolite sales. We expect to announce our progress on several additional strategic and financial opportunities that do not involve dilution of any kind.

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