American Tungsten (TSX-V:TUNG) has returned further tungsten intercepts from underground and surface drilling at its IMA Mine in Lemhi County, Idaho, US.
The company completed more than 9,144m of drilling between December 2025 and late August 2026.
Holes AT26-36 and AT26-43 intersected the stacked No. 5–No. 7 vein array, extending work that previously outlined more than 274m of strike length.
AT26-43 returned 4.51m @ 0.470% tungsten trioxide (WO₃) from 65.47m in the No. 7 vein, including 2.04m @ 0.931% WO₃. The same hole intersected 2.04m @ 0.547% WO₃ in the No. 5 vein.
Drilling from the Zero Level also intersected the 41R vein, which had not previously been tested in the company’s drilling program. AT26-39 returned 2.87m @ 0.802% WO₃ from 57.79m, including 1.34m @ 1.551% WO₃.
Vice President of Exploration Austin Zinsser says the results extend known veins and identify tungsten-bearing zones beyond previously mined areas.
“Together, these intersections continue to reinforce our view that IMA hosts a significantly larger mineralised system than previously recognised, while highlighting the considerable exploration potential that remains both adjacent to and beyond the historic mine workings,” Zinsser says.
Surface hole AT26-48S returned 3.23m @ 0.955% WO₃ from 76.08m, approximately 122m southwest of the main underground development area.
Estimated true widths are 65–70% of drilled lengths for the reported AT26-43 and AT26-48S intercepts, and 75–90% for AT26-39.
Further assays are pending while engineering and technical studies assess a potential restart.
The company also recently appointed former Idaho governor Butch Otter as a special adviser to its advisory committee.
American Tungsten is a Canadian explorer and developer focused on advancing the past-producing IMA Mine towards potential tungsten production.
Write to France Pinzon at Mining.com.au
Main image: American Tungsten
