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


Dear Shareholders:

The year 2016 marked a major financial turnaround for USAC in spite of the lowest antimony prices in seven years. On a Company wide basis, USAC had a negative EBIDTA of $11,325 during 2016. Without a positive adjustment of $914,770, the EBIDTA for 2015 would have been a negative $820,515.  For 2016, the average price of antimony was $2.98 per pound, the lowest it has been in seven years. In 2015, the sale price was $3.97 per pound. Production of antimony increased from 2,487,321 pounds in 2015 to a new record of 2,936,886 pounds in 2016, and costs were reduced.

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Production estimates for Q1 2017:


Q1, 2017

Q1, 2016

% Change

Antimony pounds




Zeolite tons




Gold ounces, North America




Gold ounces, Australia




Silver ounces, North America







April 3, 2017. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE MKT “UAMY”)

Q1 2017 antimony production was lower than Q1 2016 due to the end of the processing of Australian concentrates. Since the beginning of 2017, the Company has accelerated the mining at Wadley and Soyatal to compensate for the Australian supply. During Q1 2017, these two properties produced an estimated 200,000 pounds of contained antimony for the Madero smelter. The smelter has only processed 132,092 pounds of metal that is being shipped to the United States as finished metal.  During this period, more furnaces were brought on line at Madero.

The Rotterdam price of antimony grade I metal has increased during Q1 2017 from $7,350 per metric ton ($3.33 per pound) to $8,750 per metric ton ($3.97 per pound). USAC will benefit from the increased prices especially with Mexican production.

Processing of the legacy Los Juarez flotation concentrates continues using the alkaline leach procedure and a furnace that is being relined in Montana. Flotation milling of the stockpiled mill feed will resume during Q2 to determine how critical a cyanide leach will be. Recent correspondence indicates that the Company could have the cyanide leach permit for the Puerto Blanco mill within 90 days. 

BRZ zeolite production during Q1 2017 was up from the same period in 2016 by 8% despite heavy snow that curtailed access from the mill to the mine.                    

CEO John Lawrence said “All efforts are focused on increasing Mexican  antimony output and starting the Los Juarez gold, silver, and antimony production.

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