American Uranium hits start line for resource expansion drilling and testing

• American Uranium set to begin resource expansion and infill drilling in Q4
• Hydrogeologic testing will be carried out concurrently
• The company plans to target resource expansion to the north of planned mine unit areas to increase the project’s overall resource base

Special report: American Uranium will kick off resource expansion drilling and hydrogeologic testing at the Lo Herma ISR uranium project in Wyoming’s Southern River Power Basin in Q4, with results expected to feed into an updated resource statement and scoping study next year.

Four drill holes were completed earlier this year by American Uranium (ASX:AMU) at Lo Herma and fitted out as groundwater monitoring wells to collect hydrogeologic data.

All four wells confirmed that the Lo Herma mineralisation sits fully within the local groundwater aquifer, making it suitable for ISR mining.

Laboratory testing of the drill core provided hydraulic parameters that will help support efficient ISR operations, and each well was screened across the mineralised sands with 5-inch casing, large enough to allow detailed hydrogeologic studies, including aquifer pumping tests.

Upcoming hydrogeologic tests at Lo Herma will involve step-drawdown tests, or single-well pumping tests, to assess sustainable pumping rates, well efficiency, and the overall hydraulic properties of the aquifers hosting the 8.57Mlb resource at 630ppm U3O8.

Drilling to begin following key approvals

The US Bureau of Land Management approved AMU’s amended drilling permit in July for up to 121 holes, covering around 37,500m.

The State of Wyoming’s Land Quality Division has also accepted the permit application and bond calculation, with formal approval and bond posting imminent to be followed by rig mobilisation and drilling commencement at Lo Herma in Q4.

American Uranium’s drilling program aims to achieve several key objectives for advancing the Lo Herma project, including step-out drilling to expand the resource to the north of the proposed MU1 and MU2 areas, and the potential to grow the overall resource base.

Infill drilling is also planned to upgrade current inferred mineral resources to indicated or measured categories within MU1 and MU2, boosting confidence in the resource.

Watch: AMU CEO and executive director Bruce Lane joins Stockhead TV

Upcoming programs to expand Lo Herma uranium resource

AMU CEO and executive director Bruce Lane said the company’s upcoming resource expansion drilling and hydrogeology programs at Lo Herma represent major steps for advancing one of America’s most promising ISR uranium projects.

“These programs will target both growth in the resource base and increased confidence in existing mineral resources along with further validation of the project’s hydrogeology,” he said.

“The program is targeting an increase of the current 8.57Mlbs (32% indicated) eU3O8 resource estimate by converting the Exploration Target range mineralisation for Lo Herma, which currently stands at 5.6 to 7.1 million tonnes at a grade range of 500ppm to 700ppm eU3O8.

“This work is expected to feed into an updated resource and scoping study in 2026 positioning us to deliver value from America’s nuclear energy revival.”

This article was developed in collaboration American Uranium, a Stockhead advertiser at the time of publishing.

This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.