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 sales for JANUARY 2019



Antimony pounds


Zeolite tons






December 2018

Antimony metal


$3.356 /pound









February 4, 2019. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE American “UAMY”) reported on the Reynosa antimony plant, Mexican antimony production, North American antimony gold and silver production; progress at Los Juarez, BRZ zeolite operations, and the large inventory of antimony at the end of January.

The dismantling and trucking of the Great Lakes Chemical Corporation, LANXESS antimony plant in Reynosa, Mexico has been on schedule. More than 50 truckloads of equipment have been shipped to the other USAC operations in Mexico and the United States. Payments for the real property have been timely and should be completed in early February.

Five long rotary furnaces with stainless steel cooling ducting, hoppers and dust collectors; burners, blowers, and fans from Reynosa have been delivered to the Madero smelter and two are currently being installed. In addition, cast iron molds, scales, two fork lifts, a truck, a car, a Caterpillar loader, a100 HP compressor, two 250KW portable generators; two motor control centers; an overhead traveling hoist, three welders, plasma torch, structural steel, man lift, laboratory equipment, tools, extra stainless steel baghouses, a 12,000 gallon water tank, pumps, a truckload of electric motors, a truckload of spare parts, truckloads of filter media and wire cages for the dust collectors, a truckload of new one ton totes, and large amounts of hydrogen peroxide and caustic. The equipment will result in a major increase in capacity and a lowering of costs at Madero.

The North American supplier of raw materials has resumed production and has shipped seven trucks containing a total of 128,013 pounds of contained antimony together with gold and silver during January. During 2018, they only shipped 37 trucks that averaged 57,002 pounds of contained antimony per month.

In January 2019 we received seven truckloads of Wadley direct shipping ore containing approximately 35% antimony containing about 70,000 pounds of  antimony. This is a sharp increase from last year when the monthly average was  about 48,000 pounds. Two compressors have been delivered to the mine and are expected to rapidly increase production once installed.

At the Puerto Blanco flotation mill, the assembly of the cyanide leach plant is rapidly progressing. From Reynosa the plant received one large stainless steel leach tank, an elaborate indirect gas-fired rotary kiln for the regeneration of carbon, three 4 foot multi deck rotary screens, three air operated diaphragm pumps; three motor control centers with breakers, starters, conduit, wire; structural steel, decking and steel stairways’ 5 transformers, 3 overhead traveling hoists, pipe, a large number of electric motors, pipe, laboratory equipment, a stainless steel dust collector, a platform scale, and a 75 HP electric compressor. Production from the caustic leach plant at Madero to process the flotation concentrates has resulted in close to a 100% recovery of the gold and silver. The pilot production is scheduled for shipment during February.


The sale of zeolite was 1,370 tons in January 2019. A new sales team was hired and has already obtained new customers.


CEO John Lawrence said “The equipment from Reynosa was a major bonus for all operations and will increase capacity while lowering costs. The resumption of production from our North American supplier from an average of 57,002       pounds of antimony per month during 2018 to 128,013 during January 2019           is a major boost in antimony production as well as gold and silver. The testing of the Los Juarez caustic leach of flotation concentrates has been finished with excellent recoveries of gold and silver, and the construction of the cyanide leach circuit at Puerto Blanco is proceeding on schedule. The inventory of 348,985 pounds of contained antimony at the end of January is very large and should provide substantial cash flow once processed”


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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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