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
2017 and JANUARY 2018



December 2017

January 2018

% Change

Antimony pounds




Zeolite short tons



+ 47%





February 5, 2018. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE American “UAMY”) reported estimated sales for December 2017 and January 2018.

Antimony sales were 135,896 pounds or 177% greater in January 2018 than December 2017 due to the fact that customers do not want large inventories at year end. USAC’s Mexican production has been more meaningful as the North American supply of raw materials has slowed down.

Zeolite sales were 428 tons or 47% greater in January 2018 than in December 2017 due to new orders and customers. The BRZ zeolite has out- performed other domestic and Canadian zeolites producers and has been chosen for nuclear remediation and the removal of ammonium from water. Orders for BRZ are strong for the first half of 2018.

Construction of the pilot cyanide leach circuit at the Puerto Blanco mill for the leaching of the Los Juarez gold and silver tailings continues making progress. After the successful testing of the leach circuit, the production will be ramped up to the 100 ton per day mill capacity. Thereafter, work will begin on the 400 ton per day mill, and the same leach circuit can be expanded to accommodate the 400 ton per day mill at a minimal expense.

CEO John Lawrence said “We are excited about the sharp increase in antimony and zeolite sales in January and the startup of gold and silver production from Los Juarez. We are still working on several strategic and financial opportunities presented to the Company that do not involve dilution of any kind.”

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