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 Q2 2017
COMPARED TO Q2 2016

 

PRODUCT Q2 2017 Q2 2016 %
CHANGE
Antimony pounds 505,760 732,802 -31.0
Zeolite tons 3,352 4,218 -20.5
Silver ounces 17,552.32 29,219.25 -39.9
Gold ounces 61.1552 76.09 -19.62

 

 


 


RECENT NEWS

U. S. ANTIMONY REPORTS LOS JUAREZ PRODUCTION PLANS

July 3, 2017. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE MKT “UAMY”) reported that following the milling of 400 metric tons of Los Juarez gold/silver/antimony at the Puerto Blanco mill in Guanajuato, Mexico that it will proceed with the cyanide circuit to increase the recoveries of both the silver and gold from the flotation mill tailings. Initial results of the floatation assays without the cyanide circuit are as follows

Item

Gold

Silver

Antimony

Heads

0.035 opmt

3.27 opmt

0.652%

Tails

0.016 opmt

1.618 opmt

0.348%

Recovered grade

0.019 opmt

1.65 opmt

0.17%

% recovery

52.8%

49.6%

31.5%

(opmt = ounces per metric ton)

The flotation concentrate contained 2.52 opmt gold, 496.4 opmt silver, and 52.0% antimony. The floatation concentrates will be processed by the caustic leach circuit which is operational.

Cyanide testing of the mill tailings has indicated excellent recoveries, and the antimony recovery has been on the order of 70% at lower depths. The estimated recovery of the values after the caustic leach and cyanide circuit of the tailings is as follows:

Metal

Assay

Recovery

Value

Value /mt

Gold

0.035 opmt

90%

$1,250/oz

$39.38

Silver

3.27 opmt

90%

$16.50/oz

$48.56

Antimony

0.652%

70%

$3.90/lb

$39.12

Total

 

 

 

$127.06

Construction of the cyanide leach circuit for the Puerto Blanco mill tailings will begin when the permit is approved by SEMARNAT (Mexican equivalent of the EPA). Tentatively, the plan is to leach in Mexico and handle the second part of the process in Montana which is expected to cut Capex costs significantly, reduce operating costs, and expedite the start of the circuit. 

At the Wadley deposit in San Luis Potosi Mexico, underground miners have been increased to 90 men. Plans are underway to reopen the Guadalupe deposit in Zacatecas, Mexico. Mexican production is being increased to compensate for the reduction of Australian concentrate processing.

The Company has posted a Face book page for United States Antimony and another for Bear River Zeolite and has already seen significant activity.

CEO John Lawrence said “We are excited about the Los Juarez gold, silver, and antimony estimated recovered values of $127.06 per metric ton during the recent milling campaign. Completing the process in Montana will reduce Capex and expedite the start of the project.  Mexican antimony production and BRZ zeolite sales are anticipated to increase to provide cash flow for the leach plant.”

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