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


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August 13, 2019. Thompson Falls, Montana. United States Antimony Corporation
(“USAC”, NYSE American “UAMY”) will host an investor call at 4:15 P. M. EDT on Wednesday August 14, 2019 to review the second quarter 2019 10Q.

Conference Title: United States Antimony Corp.

Conference ID: 2681928

Dial In Information:
Toll free: 1-800-367-2403
International: 1-334-777-6978

Remote Replay available for 7 days:
Conference ID/Passcode: 2681928
Toll free: 1-888-203-1112
International: 1 719-457-0820


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August 5, 2019. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE American “UAMY”) announced progress on the gold, silver, and antimony Los Juarez project as follows:

  1. Los Juarez Mine, Queretaro, Mexico:  Mining continues in two of the open pits. Ore is being hauled to the mill from the mine. The 10 year mining license was renewed.

  2. Puerto Blanco Flotation Mill, Guanajuato, Mexico: The water well is being deepened from 140 meters to 200 meters to increase the water supply. New mill liners have been installed, and grinding media and flotation reagents have been purchased to support increased production.

  3. Puerto Blanco Leach Circuit, Guanajuato, Mexico: The HDPE plastic liner for the pond has been purchased and is being shipped to the mill for installation.  Fire assaying equipment for gold and silver has been purchased and includes an atomic absorption spectrophotometer, furnace, and other equipment for plant control.

  4. Madero Smelter, Coahuila, Mexico: The caustic leach plant has been tested and is operational to produce gold, silver, and antimony.

  5. USAC Smelter, Thompson Falls, Montana: The precious metal circuit has also been tested and gold and silver were shipped in June. One furnace has been relined and another is scheduled but not immediately needed. Reagents, fluxes, and furnace hardware have been purchased.

Estimated sales for the first half of 2018 and 2019 are as follows:


1st half 2018

1st half 2019


% change

Antimony lbs.





Gold oz.





Silver oz.





Zeolite tons




+ 1.5

The average Rotterdam price for antimony metal during July 2019 was $6,096 per metric ton or $2.76 per pound.  

CEO John Lawrence said “USAC is now on the cusp of an operational  break out with the installation of three LRF furnaces at Madero, the startup of major gold and silver production from Los Juarez, and the continued increase in BRZ sales of zeolite.”

About U.S. Antimony

US Antimony is a growing, vertically-integrated natural resource company that has production and diversified operations in precious metals, zeolite and antimony. 


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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