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 DECEMBER 2017



December 2017

Antimony pounds


Antimony tri-sulfide pounds


Zeolite short tons


Gold ounces


Silver ounces



Estimated sales for 2016 and 2017





Antimony pounds




Antimony tri-sulfide pounds




Zeolite tons




Gold ounces




Silver ounces






January 8, 2018. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE American “UAMY”) reported production.

Antimony sales were lower in December as an additional 98,851 pounds had been produced, but the customers did not want to take delivery until the first of 2018 due to inventory reasons. Otherwise, the antimony production would have been 175,719 pounds for the month. During December, USAC only received raw materials from North America containing approximately 36,600 pounds of antimony due to supplier maintenance issues. Normally this would have been approximately 110,000 pounds. Mexico provided raw materials containing approximately 44,284 pounds. In December, Mexico provided 55% of the raw materials.

Zeolite sales would have been higher, but a shortage of trucks prevented the delivery of another 451 tons of finished product.

Antimony production in 2017 was down due to the loss of raw materials from Australia.

Construction of the cyanide leach tailings pond at the Puerto Blanco mill for the leaching of the Los Juarez tailings is underway for the placement of the plastic membrane. Equipment for the leach plant is being built in Montana.

CEO John Lawrence said “We are excited about the commencement of construction of the pilot leach plant for Los Juarez. Additionally, the Company added 30 new customers for the BRZ zeolite, and we expect to see sales grow during 2018. In the near future, we expect to announce our progress on several additional strategic and financial opportunities presented to the Company that do not involve dilution of any kind.

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