United States Antimony Stock Price, News & Analysis

United States Antimony Corporation (UAMY) is a mining and minerals processing company focused on antimony, zeolite, and related critical minerals. Through United States Antimony Corporation and its subsidiaries in the U.S., Mexico, and Canada, the company sells antimony, zeolite, and precious metals primarily in the U.S., Mexico, and Canada. UAMY’s common stock trades on the NYSE American and NYSE Texas under the symbol UAMY, and the company is incorporated in Texas.

According to multiple company disclosures, United States Antimony describes itself as “The Critical Minerals and ZEO Company,” highlighting its focus on antimony, cobalt, tungsten, and zeolite. The company states that it is a leading producer and processor of antimony, zeolite, and other critical minerals, and that it is the only fully integrated antimony company in the world outside of China and Russia. In various communications, UAMY also notes that it owns two of the three operating antimony smelters in the Western Hemisphere.

Core operations and products

United States Antimony mines, purchases, and processes ore primarily into antimony oxide, antimony metal, antimony trisulfide, and precious metals at facilities located in Montana and Mexico. The company explains that antimony oxide is used to form a flame-retardant system for plastics, rubber, fiberglass, textile goods, paints, coatings, and paper, and is also used as a color fastener in paint and as a phosphorescent agent in fluorescent light bulbs. Antimony metal is used in bearings, storage batteries, and ordnance. Antimony trisulfide is used as a primer in ammunition.

In addition to antimony products, United States Antimony recovers precious metals, primarily gold and silver, at its Montana facility from third party ore. The company also operates the Bear River Zeolite ("BRZ") facility in Idaho, where it mines and processes zeolite, a group of industrial minerals. According to company descriptions, zeolite from BRZ is used in water filtration, sewage treatment, nuclear waste and other environmental cleanup, odor control, gas separation, animal nutrition, soil amendment and fertilizer, and other miscellaneous applications.

Business segments and geographic footprint

Polygon data and company descriptions indicate that United States Antimony operates through at least two major segments: an antimony segment and a zeolite segment. The antimony segment covers mining, purchasing, and processing ore into antimony oxide, antimony metal, antimony trisulfide, and associated precious metals. The zeolite segment is centered on the Bear River Zeolite (BRZ) operation in Idaho. The company notes that it and its subsidiaries operate in the United States, Mexico, and Canada, and that its sales are primarily into the U.S., Mexico, and Canada.

At its facilities in Montana and Mexico, United States Antimony processes third party ore and, as disclosed in its news releases, also mines its own antimony ore in Montana. The company has highlighted antimony mining activities at Stibnite Hill in Montana, located adjacent to its smelter at Thompson Falls, Montana. UAMY reports that it has historically mined antimony at Stibnite Hill and has resumed activities there using a surface mining method. The company has also stated that it is the only North American supplier of antimony trisulfide approved by the United States Defense Logistics Agency (DLA) for use in military primers.

Zeolite operations and Bear River Zeolite (BRZ)

United States Antimony’s zeolite operations are conducted through its Bear River Zeolite (BRZ) facility in Idaho, described as the company’s zeolite division. The company mines and processes zeolite there, and emphasizes that zeolite is used in water filtration, sewage treatment, nuclear waste and other environmental cleanup, odor control, gas separation, animal nutrition, soil amendment and fertilizer, and other applications. In a shareholder communication, management has stated that BRZ controls what it believes to be some of the highest quality zeolite in the world and that, based on a reserve report issued in 2025, the reserve life at BRZ exceeds 400 years. UAMY has also noted internal efforts to expand BRZ’s revenue base by serving new and existing customers.

Critical minerals positioning and supply chain role

United States Antimony repeatedly characterizes itself as part of the critical minerals supply chain in North America. The company highlights antimony, cobalt, tungsten, and zeolite as key focus minerals and describes its role in supporting industries such as defense and manufacturing. UAMY states that antimony oxide is a key ingredient in flame-retardant systems for industrial fabrics and other materials, and that antimony trisulfide meeting military specifications is used in primers for munitions. The company has disclosed that it holds sole-source approval from the U.S. Defense Logistics Agency for antimony trisulfide used in military primers.

In its public communications, United States Antimony has also discussed long-term supply contracts, including a five-year, sole-source indefinite-delivery, indefinite-quantity (IDIQ) contract with the U.S. Defense Logistics Agency and a five-year supply agreement with a U.S. industrial fabric manufacturer for antimony trioxide. These contracts are described by the company as supporting supply security within the U.S. and anchoring critical mineral supply chains within domestic borders.

Mining claims and resource expansion

The company reports that beginning in 2024 it started acquiring mining claims, real properties (patented claims), and leases located in Alaska, Montana, and Ontario, Canada. United States Antimony states that this effort is intended to reduce the cost of third-party antimony ore purchases and to expand its operations and product offerings. In Montana, the company has described staking federal mining claims around Stibnite Hill and entering into discussions to purchase remaining patented claims not already owned by the company. It has also referenced plans to develop additional antimony source material from its Alaskan property holdings.

Stock listing and corporate information

United States Antimony Corporation is incorporated in Texas and identified in SEC filings with Commission File Number 001-08675 and IRS Employer Identification Number 81-0305822. The company’s common stock, with a par value of $0.01 per share, is registered under Section 12(b) of the Securities Exchange Act of 1934 and trades on the NYSE American and NYSE Texas under the ticker symbol UAMY. The company files periodic and current reports with the U.S. Securities and Exchange Commission, including Form 8-K reports covering operational updates, material agreements, board changes, and capital markets activities.

Investment perspective

For investors researching UAMY stock, United States Antimony represents exposure to antimony, zeolite, and other critical minerals with operations in North America and Mexico. The company emphasizes its integrated position in the antimony value chain, from mining and ore acquisition to smelting and production of antimony oxide, metal, and trisulfide, as well as its zeolite mining and processing at Bear River Zeolite. Its disclosures focus on the importance of antimony and zeolite in applications such as flame retardants, ammunition primers, water treatment, environmental cleanup, and animal nutrition.

Frequently Asked Questions about United States Antimony Corporation (UAMY)

• What does United States Antimony Corporation do?
  United States Antimony Corporation mines, purchases, and processes ore into antimony oxide, antimony metal, antimony trisulfide, and precious metals at facilities in Montana and Mexico. It also mines and processes zeolite at its Bear River Zeolite facility in Idaho and sells antimony, zeolite, and precious metals primarily in the U.S., Mexico, and Canada.
• What are the main products of United States Antimony?
  The company’s main products include antimony oxide, antimony metal, antimony trisulfide, and precious metals such as gold and silver recovered from third party ore. Through its BRZ operation, it also produces zeolite used in water filtration, sewage treatment, nuclear waste and environmental cleanup, odor control, gas separation, animal nutrition, soil amendment and fertilizer, and other applications.
• How are United States Antimony’s products used?
  According to company descriptions, antimony oxide is used in flame-retardant systems for plastics, rubber, fiberglass, textile goods, paints, coatings, and paper, and as a color fastener in paint and a phosphorescent agent in fluorescent light bulbs. Antimony metal is used in bearings, storage batteries, and ordnance. Antimony trisulfide is used as a primer in ammunition. Zeolite from BRZ is used in water and sewage treatment, nuclear waste and environmental cleanup, odor control, gas separation, animal nutrition, and soil and fertilizer applications.
• Where does United States Antimony operate?
  United States Antimony and its subsidiaries operate in the United States, Mexico, and Canada. The company processes ore at facilities in Montana and Mexico, mines and processes zeolite at Bear River Zeolite in Idaho, and reports that it has begun acquiring mining claims and leases in Montana, Alaska, and Ontario, Canada.
• What is meant by United States Antimony being a fully integrated antimony company?
  The company describes itself as the only fully integrated antimony company in the world outside of China and Russia. In its public statements, this refers to its combination of antimony ore sources, smelting capacity, and production of antimony oxide, metal, and trisulfide products, along with its role as a supplier to both commercial and defense-related customers.
• What is Bear River Zeolite (BRZ)?
  Bear River Zeolite (BRZ) is United States Antimony’s zeolite division located in Idaho. At BRZ, the company mines and processes zeolite, which it describes as a group of industrial minerals used in water filtration, sewage treatment, nuclear waste and other environmental cleanup, odor control, gas separation, animal nutrition, soil amendment and fertilizer, and other uses. The company has stated that a reserve report issued in 2025 indicates a reserve life at BRZ exceeding 400 years.
• How is United States Antimony involved with the U.S. Defense Logistics Agency?
  United States Antimony states that it is the only North American supplier of antimony trisulfide approved by the U.S. Defense Logistics Agency for use in military primers. The company has also announced a five-year, sole-source IDIQ contract with the DLA, which it describes as supporting long-term revenue and supply security for antimony products meeting military specifications.
• What stock exchange is UAMY listed on?
  United States Antimony Corporation’s common stock is listed on the NYSE American and NYSE Texas under the ticker symbol UAMY. The stock is registered under Section 12(b) of the Securities Exchange Act of 1934.
• What minerals beyond antimony and zeolite does the company reference?
  In its branding as “The Critical Minerals and ZEO Company,” United States Antimony highlights antimony, cobalt, tungsten, and zeolite. The company also recovers precious metals, primarily gold and silver, from third party ore at its Montana facility.
• How is United States Antimony expanding its resource base?
  Beginning in 2024, the company reports that it started acquiring mining claims, real properties (patented claims), and leases in Alaska, Montana, and Ontario, Canada. It has described staking federal mining claims at Stibnite Hill in Montana and pursuing additional patented claims, with the stated aim of reducing reliance on third-party antimony ore and expanding its operations and product offerings.