United States Antimony Corporation Provides Update on Mining Activities
Rhea-AI Summary
United States Antimony (NYSE:UAMY) issued a detailed update on its mining activities in Alaska, Montana, and Canada. In Alaska, the company is advancing the Ester Dome antimony exploration project (over 9,000 acres, permits since September 22, 2025) with air-track drilling and trenching across 3 of 15 identified target areas and plans up to 50 drill holes this summer. US Antimony also acquired the Nolan Creek antimony/gold property via Trustee’s Sale on January 30, 2026; a technical report by a Qualified Person reports an inferred reserve of 42,412 tons grading 28% Sb and 0.408 oz Au/ton, implying a gross, pre-cost value of about $377 million at assumed prices.
In Montana, the Stibnite Hill operation supplied roughly 800 tons of 10% Sb ore in 2025 and resumed shipments in late July 2026 after Montana DEQ-approved safeguards, with 300 additional tons trucked to the newly acquired Radersburg Mill. In Ontario, at the Fostung tungsten deposit, the company is soliciting bids, including from First Nation corporations, for bulk sampling up to at least 20,000 tons, supported by ongoing metallurgical work in Ontario and at Radersburg. Management highlighted that all three regional programs moved from acquisition to active mining or sampling with only $2.8 million in capital expenditures through June 30, 2026, and stated that 2026 will be the first year US Antimony begins using its own mined antimony ore to help fulfill customer contracts, while already delivering increasing volumes of military-grade antimony ingots since June.
Positive
- Nolan Creek inferred reserve 42,412 tons at 28% Sb and 0.408 oz Au/ton
- Nolan Creek gross in-situ value about $377 million at stated metal prices
- Stibnite Hill ore ~800 tons at 10% Sb shipped in 2025
- Additional Stibnite Hill ore 300 tons delivered to Radersburg in 2026
- Low capex $2.8 million through June 30, 2026 for three regions
- First use of own ore in 2026 to help meet customer antimony needs
Negative
- Regulatory safeguards Montana DEQ required added controls before resuming Stibnite Hill excavation
- Weather constraints Seasonal conditions and winter freeze-up limit mining windows in remote regions
- Current supply mix Still using 100% foreign-sourced antimony through mid-2026 despite new projects
Market Reaction – UAMY
Following this news, UAMY has gained 4.90%, reflecting a moderate positive market reaction. Our momentum scanner has triggered 16 alerts so far, indicating notable trading interest and price volatility. The stock is currently trading at $6.42.
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Key Figures
Historical Context
| Date | Event | Sentiment | 24h Move | Catalyst |
|---|---|---|---|---|
| Jul 15 | AI mining update | Positive | -8.2% | AI technology was contracted to evaluate the Los Juarez silver mine project. |
| Jul 07 | Mill commissioning | Positive | -6.3% | Radersburg flotation mill wet commissioning followed acquisition and facility upgrades. |
| Jul 01 | Antimony shipments | Positive | +6.1% | Initial 2026 antimony shipments were delivered under the government supply contract. |
| Jun 09 | Smelter commissioning | Positive | -6.8% | The first new Thompson Falls furnace was fired during smelter commissioning. |
| May 14 | First-quarter earnings | Negative | -10.0% | Quarterly results showed revenue of $6.8 million and a net loss of $11.3 million. |
24h Move is the share-price change in the day after each event; other market factors may also have contributed.
UAMY's recent positive operational announcements more often diverged from same-day price direction than aligned with it.
Key Terms
stibnite technical
inferred reserve technical
qualified person regulatory
froth flotation technical
assay data technical
AI-generated analysis. How Rhea-AI works. Not financial advice.
"The Critical Minerals and ZEO Company"
~ Antimony, Gold, Tungsten, and Zeolite ~
DALLAS, TX / ACCESS Newswire / August 5, 2026 / United States Antimony Corporation ("USAC," "US Antimony," or the "Company"), (NYSE:UAMY)(NYSE Texas:UAMY), a leading producer and processor of antimony, zeolite, and other critical minerals, and the only fully integrated antimony company in the world outside of China and Russia, announced today a company wide update on its mining activities located in Alaska, Montana, and Canada.
ALASKA
Active Alaska mining operations include:
Ester Dome - an exploration stage project for antimony consisting of four individual claim blocks acquired in 2025 covering over 9,000 acres and located 7 miles from the Fairbanks airport;
Stibnite Creek - 24 state mining claims were completed in an acquisition in October 2024 covering 3,840 acres. Located 160 miles southeast of Fairbanks;
Maclaren River Area Properties - four properties acquired by claim staking in May 2024 (69 claims in total). These claims occur on the south flank of the Alaska Range, approximately 200 miles south of Fairbanks.
True North Claims - State mining claims staked by the Company in 2026, located 8 miles north of the Fox Logistics Center (Fairbanks) consisting of 23 state mining claims (1,349 acres);
Dome Creek Placer - 145 acres of patented mining claims located 7 miles north of Fox Logistics Center; and
Nolan Creek - known gold/antimony deposit acquired in Trustee's sale.
Ester Dome Project
Ester Dome is an antimony exploration project area consisting of four property claim groups that aggregate greater than 9,000 acres. The center of the property is 7 miles from the Fairbanks airport. The basis of the exploration program is to evaluate the source of high antimony in soil, rock and drill holes reported by earlier gold exploration programs. The historical soil samples (more than 12,000 samples in the database) indicate high antimony content localized in 15 areas within the claims. Government geological reports published between 1910 and 1933 disclose that stibnite was encountered in several of the underground gold mines but was ignored or discarded due to low economic conditions for antimony, except during World War I and World War II.
Exploration of the Ester Dome property began when all permits were received September 22, 2025. Historical reports indicate that stibnite was intimately associated with gold mineralization in faults and veins. Accordingly, exploration is currently being conducted with an air track (A-T) drill and by trenching with an excavator to search for high-grade stibnite associated with antimony anomalies in the soils near historically productive quartz-gold vein systems and gravity anomalies previously identified during the 2025 exploration work program. The Company to-date has only investigated three of 15 target areas identified. USAC has a drilling program planned for up to 50 holes to be drilled beginning this summer. This area of Ester Dome has a history of high grade gold production dating back over 100 years.
Map showing the distribution of mining claims controlled at Ester Dome.
Nolan Creek (Antimony & Gold)
The company acquired the Nolan Creek property through a Trustee's Sale in a public auction on January 30, 2026. The property was previously owned by a private company who conducted exploration and mining of both placer and lode targets from surface and from an underground operation more than twenty years ago. An adit, collared near the bottom of a hillside connects to the antimony/gold vein structures via horizontal headings sufficiently large to provide access for modern mobile underground equipment. A technical report by Qualified Person, Tom Bundtzen, filed with Canadian Securities Regulators, and available to the public, reports an inferred reserve of 42,412 tons grading
During the past week the company hosted pre-bid underground site inspection tours by two internationally recognized mining contractors in preparation for their submission of tenders in mid-August, for underground development and mining of this high grade material. The raw ore would be trucked to our Radersburg Mill for gravity and flotation recovery of both the antimony and the gold. Mining operations are planned to begin late this year.
MONTANA
Montana Stibnite Hill (Antimony)
The Stibnite Hill operation was initiated after acquisitions of the patented Eliza claim and BLM administered in October and November 2025, and at that time provided 50 truckloads (approximately 800 tons) of ore averaging
CANADA
Fostung Deposit in Ontario (Tungsten)
The company has invited qualified bidders, including First Nation corporations, to submit proposals, with pricing, for the clearing, grubbing, earth excavation and cleaning to bedrock, percussion drilling and blasting of a readily accessible portion of the Fostung Deposit. All drill cuttings will be sampled and sent to the company's Radersburg, Montana laboratory for analysis, providing speedy turnaround of assay data to determine the grade of this bulk sample.
The follow-up phase of this planned work will be the on-site crushing and screening of the material and initial upgrading using gravity or ultra-violet methods, providing a bulk sample of at least 20,000 tons for further beneficiation and sale. Metallurgical testing, including gravity and flotation studies continue at Lakefield Research in Lakefield, Ontario and at the company's laboratory located in Radersburg.
Management Comments
Commenting on these USAC owned mining properties, Mr. Joseph Bardswich, P.E., Executive Vice President and Chief Mining Engineer, stated: "All of these regions began initial operations either last year or earlier this year subsequent to their acquisition. Because of their physical location, weather has always been a factor. However, progress has been made on all three regions where we are now or soon will be, moving critical mineral material to either our own processing centers or contracted third parties. The speed of this process is quite unusual in the mining sector. From evaluation, acquisition, permitting, contracting equipment, hiring personnel, establishing a base of operations, and including actual mining of critical mineral material are accomplishments that we are all very proud of achieving in such a short period of time, especially in these remote regions. Our field operating teams have accomplished these successes with only a
About USAC:
United States Antimony Corporation and its subsidiaries in the U.S., Mexico, and Canada ("USAC," "U.S. Antimony," the "Company," "Our," "Us," or "We") sell antimony, zeolite, and precious metals primarily in the U.S., Mexico, and Canada. The Company mines, purchases, and processes ore primarily into antimony oxide, antimony metal, antimony trisulfide, and precious metals at its facilities located in Montana and Mexico. Antimony oxide is used to form a flame-retardant system for plastics, rubber, fiberglass, textile goods, paints, coatings, and paper, 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. The Company also recovers precious metals, primarily gold and silver, at its Montana facility from third party ore. At its Bear River Zeolite ("BRZ") facility located in Idaho, the Company mines and processes zeolite, 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 miscellaneous applications. Beginning in 2024 and continuing in 2025, the Company acquired mining claims, real properties (patented claims) and leases located in Alaska, Montana, and Ontario, Canada in an effort to reduce the cost of third-party antimony ore purchases and to expand its product offerings.
Learn more about United States Antimony Corporation at www.usantimony.com.
Forward-Looking Statements:
This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including, without limitation, statements regarding the Company's future operations, production levels, financial performance, business strategy, market conditions, demand for antimony, zeolite, other critical minerals, and precious metals, expected costs, and other statements that are not historical facts. These statements are based on current expectations, estimates, forecasts, and projections about the industries in which the Company operates, as well as management's beliefs and assumptions. Words such as "anticipates," "expects," "intends," "plans," "believes," "seeks," "estimates," "may," "will," "should," "could," and variations of these words or similar expressions are intended to identify such forward-looking statements.
Forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those indicated in such statements, including, but not limited to: fluctuations in the market prices and demand for antimony and zeolite; changes in domestic and global economic conditions; operational risks inherent in mining and mineral processing; geological or metallurgical conditions; availability and cost of energy, equipment, transportation, and labor; the Company's ability to maintain or obtain permits, licenses, and regulatory approvals; changes in environmental and mining laws or regulations; competitive factors; the impact of geopolitical developments; and the effects of weather, natural disasters, or health pandemics on operations and supply chains. Additional information regarding risk factors that could cause actual results to differ materially is included in the Company's filings with the U.S. Securities and Exchange Commission, including its Annual Report on Form 10-K and Quarterly Reports on Form 10-Q.
The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by law. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof.
Investor Relations Contact: | Media Relations Contact: |
Jonathan Miller, VP, Investor Relations | Anthony D. Andora |
4438 W. Lovers Lane, Unit 100 | Edge Consulting, Inc. |
Dallas, Texas 75209 | 1560 Market Street, Ste. 701 |
E-Mail: Jmiller@usantimony.com | Denver, Colorado 80202 |
Phone: 406-606-4117 | |
| Phone: 720-317-8927 |
SOURCE: United States Antimony Corp.
View the original press release on ACCESS Newswire