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


Estimated production for January and February 2019




Antimony pounds



Zeolite tons



The antimony production does not include the inventories.





February 2019

Antimony metal










March 4, 2019, Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE American “UAMY”) reported record Mexican antimony productions and the sales of high purity antimony metal. During 2018 USAC produced an average of approximately 57,002 pounds of contained antimony per month from Mexico. During January and February 2019, the Company has produced an average of approximately 112,000 pounds per month from Mexican operations. To expedite the liquidation of the inventory, USAC has resumed the  production of high purity antimony metal at its Madero smelter for the first time in three years. The first truckload will be delivered by
March 12, 2019.

Although most of the new production of Mexican antimony is from the Wadley Mine, the production from the Sierra de Guadalupe Mines is also ramping up. Work has included the construction of a mining camp at the Santa Monica drift which contains sulfide ore, and production from the Santa Fe drift that contains primarily oxide ores. The use of pneumatic drills, compressors, load haul dump (LHD) equipment, and explosives are a distinctive advantage over Wadley production. The Guadalupe manto or layered deposits are very similar to the Wadley, but the existing infrastructure at Wadley is huge compared to Guadalupe.

The completion of the cyanide leach plant at the Puerto mill for the Los Juarez gold, silver, and antimony open pit mine includes plumbing, wiring, roofing, and the completion of the tailings pond. We anticipate completion of the tailings pond in Q2, 2019. The plant is designed for operator simplicity in order to maximize recovery. Reagents and supplies are being sourced and preparations are being made to start trucking ore to the mill.

Bear River Zeolite has been sold in Canada, Russia, Poland, Ukraine, Korea, China, Brazil, Peru, Dubai, Ireland, Mexico, and Australia, directly and through intermediaries. New uses and markets are being developed and sales for February were 1,605 tons. The operation continues to be a source of expansion funds for USAC.

CEO John Lawrence said “The strong antimony and zeolite production will help complete the construction of the Los Juarez cyanide leach circuit at Puerto Blanco which is proceeding on schedule.”


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Forward Looking Statements:

This Press Release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 that are based upon current expectations or beliefs, as well as a number of assumptions about future events, including matters related to the Company's operations, pending contracts and future revenues, ability to execute on its increased production and installation schedules for planned capital expenditures and the size of forecasted deposits. Although the Company believes that the expectations reflected in the forward-looking statements and the assumptions upon which they are based are reasonable, it can give no assurance that such expectations and assumptions will prove to have been correct. The reader is cautioned not to put undue reliance on these forward-looking statements, as these statements are subject to numerous factors and uncertainties. In addition, other factors that could cause actual results to differ materially are discussed in the Company's most recent filings, including Form 10-KSB with the Securities and Exchange Commission.


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