Red Mountain Mining (ASX:RMX) has acquired the Thompson Falls Antimony Project.
The high-grade asset is situated on the Montana-Idaho border, directly adjacent to United States Antimony's (NYSE:UAMY) operations.
The proximity is a major competitive advantage, as UAMY hosts the only antimony smelter in the United States—a facility vital to domestic industrial and defense sectors.
Initial exploration has already yielded "superb" high-grade results, with assays returning peaks of 36.5% Antimony (Sb) and 0.48g/t Gold (Au).
The project area includes three historical underground mines and an open pit, located within the same geological stratigraphy as the nearby Stibnite Hill Mine.
Beyond antimony, the site shows significant silver potential, sitting at the eastern edge of Idaho’s legendary Coeur d’Alene district, which historically accounts for roughly 18% of total US silver production.
As the US government rolls out a $12 billion strategic minerals stockpile initiative, Red Mountain is positioning itself as a key player in domestic supply security.
By integrating Thompson Falls into its existing portfolio across Utah, Idaho, and New South Wales, the company is capitalising on unprecedented government support from both Washington and Canberra.
At the time of reporting, Red Mountain Mining's share price was $0.028.