Vancouver, British Columbia — December 18, 2025 — Leads & Copy — American Tungsten Corp. has completed the initial drillhole at the Company’s IMA mine project and reports presence of hubnerite and scheelite tungsten mineralization over multiple core intercepts.
The Phase 1 drilling program is focused on five priority exploration targets consisting of the No. 5 and No. 7 Vein systems, the IMA West Vein, the Eastern Vein, and the Main IMA Vein. The program was designed to systematically test multiple sheeted tungsten veins up-dip and along strike of historical resources defined on the “D-Level” of the IMA mine. The objective of the Company’s Phase 1 program is to further delineate these historically identified tungsten vein systems and address compelling low-risk targeted areas for expansion of known mineralization by the end of Q1 2026.
The first drillholes were collared from a new crosscut in the footwall of the D Level vein system. AT25-01was oriented on a 280 azimuth with a +40 inclination; AT25-02 was oriented on a 225 azimuth with a +45 inclination. AT25-01 was completed at 373 feet on December 12, 2025; Drillhole AT25-02 is ongoing as part of the Company’s planned 10,000 ft, phase 1 program. The drilling contractor is initiating double-shifts to increase productivity.
AT25-01 intersected the No. 5 vein over 12.7 ft from 95 to 107.7 ft, and the No. 7 vein over 14.1 ft from 240.2 to 254.3 ft. AT25-02 is currently drilled to a depth of approximately 150 ft and intersected the No.5 vein over 11.5 ft from 93 to 104.5 ft.; Hubnerite (MnWO4) was observed as 0.5-10mm reddish-brown to black striated prismatic crystals occurring within discrete vein horizons distributed throughout significant widths of the No. 5 quartz vein. Scheelite (CaWO4) was observed under shortwave UV light as blue fluorescent diffuse masses, sometimes rimming hubnerite crystals within coarse milky quartz over four feet of the vein.
In the No. 7 vein, hubnerite was observed as 0.5 to 5mm crystals occurring in discrete vein horizons within sheeted or milky quartz vein phases, locally partially oxidized. Accessory minerals observed in both the No. 5 and No. 7 veins include tetrahedrite, chalcopyrite, galena, molybdenum, pyrite and fluorite; Wall rock in AT25-01 was generally unmineralized to weakly mineralized, except where additional pyrite-calcopyrite +/- molybdenum veins were intersected outboard of the primary veins. True width of the veins is estimated to be approximately 80% of intercept width, based on projected geometry and vein contact-core axis angles. Core recovery is greater than 90% within vein material. Assay results have not been received for AT25-01 or AT25-02.
The next drillholes from the first drill station, are oriented to fan southward from the initial intercepts. The drift to access the second drill station 200 ft to the north is well advanced. Analytical results are pending and there is no guarantee that assay results will verify visual observations of mineralization, grade, or economic viability.
The IMA Mine is a past producing underground tungsten mine situated on 22 patented claims located in East Central Idaho. Between 1945 and 1957, the property produced approximately 199,449 MTUs of WO3 and was subsequently explored for molybdenum and tungsten by various operators between 1960-2010. American Tungsten Corp is currently conducting an exploration drill program and assessing potential for re-start of underground tungsten mining operations at the Ima Mine.
American Tungsten Corp’s QA/QC program applies industry standard best practices to ensure data quality and integrity for the IMA Mine project, including maintaining chain of custody, secure sample storage, adherence to data collection protocols and inclusion of certified reference, blank and duplicate quality assurance samples in laboratory submissions. Samples will be submitted for assay to ALS Minerals, Twin Falls, ID in December, 2025. Assay results will be released when available. Visual mineral identification was conducted by qualified professional geologists in conjunction with assessment of mineral form, hardness, streak, fluorescence and other semi qualitative data. Analytical results are pending and there is no guarantee that assay results will verify visual observations of mineralization, grade, or economic viability.
Technical information in this news release has been prepared in accordance with Canadian regulatory requirements set out in National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI-43-101”). Austin Zinsser, P.G., SME-RM, Vice President, Exploration for the Company, and a Qualified Person as defined by NI-43-101, has reviewed and approved the scientific and technical information in this news release.
American Tungsten Corp. is a Canadian exploration company focused on high-potential tungsten and magnetite assets in North America. The Company is advancing the Ima Mine Project in Idaho to commercial production, addressing critical metal scarcity in North America. The Company’s Ima Mine Project is a historic and high-quality underground tungsten past-producing property on private-patented land well above the water table with significant infrastructure. The Company holds an exclusive option to acquire full ownership (subject to a 2% royalty) and has expanded its land position with 113 additional federal claims covering nearly 2,000 acres.
Ali Haji
Chief Executive Officer
Email: ahaji@americantungstencorp.com
Phone: +1 647 871 4571
Source: American Tungsten Corp.
