收购美国唯一锑冶炼厂附近的“汤普森瀑布”高品位锑项目

HIGHLIGHTS: •Red Mountain has acquired the“Thompson Falls Antimony Project”adjacent toUnited StatesAntimony Corporation’soperations(NYSE: UAMY, Market Cap A$2.2b),whichhasthe only •Red Mountainhasimmediatelyidentified standout prospectivity at the project,locatingthreehistoricalunderground mines and a pit within the project area.Initial assays from the o36.5% Sb and 0.48g/t Auo21.0% Sb and 0.65g/t Auo13.7% Sb and 0.14g/t Au •The Project is located on theMontana-Idaho border,within the same host stratigraphyandnearUAMY’s Stibnite Hill Mine, the second largest known stibnite vein deposit in the US, •Thompson FallsAntimony Project furtherstrengthens Red Mountain's Utah, Idahoand NSWCritical Mineralsportfolio, creating a unique Western asset base positioned to benefit from •The US Governmentthis weeklaunched a $12 billion strategic minerals stockpile initiative,aimed at securingCriticalMineral supply chains. Red Mountain's Thompson FallsAntimonyFor personal use only •Red Mountain continues to accelerate its Critical Minerals explorationand developmentat theArmidale project in NSW, Australiaandadditional technical workisrapidlyprogressing at the Red Mountain Mining Limited (ASX: RMX,US OTCQB: RMXFF,or“the Company”),a CriticalMinerals exploration and development companywith an established portfolio in Tier-1 Mining Districtsin the United States and Australia,ispleasedto announcethe Company’s newly-acquiredThompson operations(NYSE: UAMY; Market Cap A$2.2billion) with the only operating Antimony smelter inthe US–the Thompson Falls Smelter in Montana and the Stibnite Hill Mine.Red Mountain’s initialbatch of assay results have returned outstanding grades of up to36.5% Antimonyand0.65g/t Gold High-gradeAntimonyup to 36.5%Discovered and Several Historic Mines Identified Red Mountain has discovered high-grade Antimony and highly anomalous gold as part of its first-pass program(Figure5andTable) at theEastern Star undergroundminereturnedhigh antimonyresults, up to36.5% Sb, and elevated gold, up to0.65g/t Au. These samples also consistently contain elevated arsenic.Red Mountain’s US field team successfully located three historical undergroundmines and one pit within the Company’s Thompson FallsAntimony Project area (Figure3;Figure4). However, the wide variety of listed metals for the threemineswithin the project area and the presenceof siderite in some material on the Eastern Star dump(TableA)suggests that the Thompson FallsFor personal use only Thethree undergroundworkings are listed in the Idaho Geological Survey and Montana Bureau ofMines and Geology historical mines databases, with their produced metals listed as silver-lead(Eastern The acquisition of claims was completed directly with both the Idaho Bureau of Land Managementand Montana Bureau of Land Management offices, utilising existing internal cash from late 2025funding initiatives.The total costsfor securingtheprojectwere$158,000. As the project sits on the Project located in a prime position in a globally significant mineralised beltFor personal use only Red Mountain’s Thompson Falls Antimony Project lies at the eastern end of Idaho’s Coeur d’Alenemineral district, whichis one of the globe’s largest silver provinces, accounting for ~18% of total 20203totals1,257Moz Ag,7.8Mt Pb, 3.0Mt Zn, 1.1Moz Auand191kt Cu.Production figures forantimony are not readily available and the metal was historically treated a waste product by manyproducers. Taylor and Hoffstra (2005)4estimate that161kt Sbwas produced from the SunshineMine,which wasalsoone of the world’s richest and largest silver minesthroughout the 20thCentury before closing in early 2001. Only a small portion ofSunshine’s antimony production is recorded by theIdaho Geology Survey, whodetail production of 5.5kt Sb5,6between1982 and 2000.Taylor andHoffstra (2005)4alsonote production of an unspecified quantity of antimony from the Bunker Hill-Last Chance and Crescent mines. Orogenic polymetallic vein-hosted mineralisation is known to extend from theCoeur d’Alene miningdistrict into western Montana.Red Mountain’s Thompson Falls Antimony Projectencompasses the UnitedStatesAntimonyCorporationrecommencesmining at Stibnite Hill The Stibnite Hill Mine is approximately6km east of the Red Mountain’sThompson Falls AntimonyProject, located close toUSAntimony’ssmelter (Figure).As discussed by Crowley (1963)8antimony mineralisation at Stibnite Hill was first discovered in 1884.For most of the mine’s history, productionhas been small-scale, from numerous individual claims.Mineralisation occursin flat-lying (dipping~25°northwest)dominantly stratigraphy-parallel,quartz-sulfide veins, which range in thickness from~1cm to 1.5m and can be traced for up to 1km along strike.Sulfide content varies along strike. In October 20259UAMY advised the marketthat the company had recommenced mining at StibniteHill using asurface mining "cut and cover" method that removes first overburden and then veinstibnite in panels, with