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

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

Bear River Zeolite Plant, Preston, Idaho

SALES estimates for
April 2018

Antimony pounds

136,812

Zeolite short tons

1,424

Commodity prices :

Commodity

Quote

May, 2018

Antimony metal

Rotterdam

$3.866/pound

$8,525/mt

RECENT NEWS

U. S. ANTIMONY ANNOUNCES INVESTOR CALL

May 11, 2018. Thompson Falls, Montana. United States Antimony Corporation

(“USAC”, NYSE American “UAMY”) will host an investor call at 4:15 P. M. EDT
on May 16, 2018 to review the 2018 first quarter 10Q financials.

Conference Title: United States Antimony Corp.
Conference ID: 5200523

Dial In Information:
Toll free: 1-866-531-8880
International: 1-719-325-2499

Remote Replay available for 7 days:

Conference ID/Passcode: 5200523
Toll free: 1-888-203-1112
International: 1-719-457-0820

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U. S. ANTIMONY REPORTS PROGRESS ON GOLD AND SILVER LEACH PLANT AND STRONG ZEOLITE SALES

May 7, 2018. Thompson Falls, Montana. United States Antimony Corporation (“USAC”, NYSE American “UAMY”) reported progress on the construction of the leach plant for the Los Juarez gold-silver-antimony deposit in Queretaro, Mexico. The excavation and lining of the tailings pond is the largest and most expensive project, and it is underway. The concrete floor of the leach plant is being poured and initially no building will be necessary over the floor. Much of the equipment is being assembled in Montana and also in Mexico. Testing and shake-down of the plant is anticipated in Q4 2018.

Tailings pond construction

BRZ zeolite sales for most applications were up again in April.

CEO John Lawrence said “After years of waiting on cyanide permit, we are excited about the construction of the leach plant and imminent production of gold and silver. For years many shareholders considered the Los Juarez property as USAC’s “crown jewel”, and the belief was slowly abandoned due to the metallurgical work and the permit delays. We expect to announce our progress on several additional strategic and financial opportunities that do not involve dilution of any kind.

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May 11, 2018. Thompson Falls, Montana. United States Antimony Corporation

(“USAC”, NYSE American “UAMY”) will host an investor call at 4:15 P. M. EDT on May 16, 2018 to review the 2018 first quarter 10Q financials.

(“USAC”, NYSE American “UAMY”) will host an investor call at 4:15 P. M. EDT
on May 16, 2018 to review the 2018 first quarter 10Q financials.