Lo Herma Drilling Program Approved for American Uranium in Wyoming

Lo Herma Resource Expansion Drilling Gains Approval

American Uranium Limited (ASX: AMU; OTC: GTRIF) secured approval from Wyoming’s Land Quality Division for the Lo Herma resource expansion drilling program. The permit covers up to 121 drill holes and 37,500 metres of drilling. Phase One will begin in Q4 2025, focusing on step-out drilling north of Mine Units 1 and 2.

Lo Herma already hosts a JORC-compliant resource of 8.57 million pounds U₃O₈ with 32% classified as Indicated. The approved drilling campaign aims to convert exploration target mineralization of 5.6–7.1 million tonnes at 500–700 ppm eU₃O₈ into a higher‑confidence resource.

American Uranium sees this as a crucial step in supporting its 2026 updated Mineral Resource Estimate and Scoping Study. The project sits in Wyoming’s Powder River Basin, surrounded by active ISR uranium operations.

Strategic Importance and Technical Objectives of Lo Herma Drilling

The Lo Herma drilling program intends to deliver two key outcomes. First, it will expand the known resource trend by targeting step-outs to the north of MU1 and MU2. Second, it will infill within those units to upgrade Inferred resources to Indicated or Measured. This dual approach could materially strengthen resource confidence.

In-situ recovery (ISR) methods underpin the Lo Herma development model. To that end, American Uranium plans hydrogeological testing and core drilling that support ISR feasibility. The region benefits from proximity to existing uranium processing infrastructure, including the Smith Ranch–Highland ISR facility operated by Cameco in Wyoming’s Powder River Basin.

Continued exploration beyond Lo Herma includes projects in the Great Divide Basin and Utah’s Henry Mountains. These assets could supplement Lo Herma’s production profile and diversify the company’s uranium portfolio.

SuperMetalPrice Commentary:

Wyoming’s permit approval for Lo Herma marks a critical inflection point for American Uranium amid rising interest in nuclear energy and uranium supply security. The dual-path drilling strategy—step-out and infill—could unlock significant upside in resource size and confidence. Given the strong economics for ISR uranium in the Powder River Basin and existing infrastructure, Lo Herma stands as a compelling development-stage uranium project. Investors should watch assay releases, scoping study results, and how the project aligns with U.S. policy on domestic nuclear supply.