United States Antimony said it has moved 42 truckloads of stibnite ore from its Stibnite Hill mine in Thompson Falls, Montana so far in 2026, equal to about 576 tons of high-grade ore. The company said each truckload has averaged about 14 tons and roughly 10% antimony content.
The current pace is about three truckloads per operating day, or around 42 tons a day. USAC said that compares with its 2025 mining campaign, when it hauled about 800 tons over a 45-day period. On that basis, the company said its 2026 operation is moving ore at more than twice last year’s daily rate.
USAC restarted mining at Stibnite Hill in April after winter weather ended the prior campaign in November 2025. The company said the ore is being hauled to its Radersburg, Montana flotation mill, then shipped as antimony concentrate to either its Thompson Falls smelter or the Madero smelter in Mexico.
The company said the Stibnite Hill work is part of its effort to increase domestically sourced antimony feedstock and cut back on third-party and foreign ore purchases. Following these announcements, the company's shares moved 0.78%, and are now trading at a price of $5.14. Check out the company's full 8-K submission here.
