GTI Energy (ASX:GTR) ISR Uranium Progress Drives Sector Developments | asx 200 Mining Insight

Highlights:

• GTI Energy (ASX:GTR) completed key leach and hydrological tests at its Lo Herma ISR uranium project in Wyoming

• All monitoring wells confirmed uranium zones within saturated aquifer zones suitable for in-situ recovery methods

• The Lo Herma Scoping Study remains on track for release with all fieldwork and lab testing now concluded

GTI Energy Ltd (ASX:GTR), listed on the Australian Securities Exchange, operates within the uranium mining sector, a segment often scrutinised alongside broader resource activity under the asx 200 index. During the March quarter, the company advanced several initiatives tied to its Lo Herma in-situ recovery (ISR) uranium project located in Wyoming, United States. Key workstreams across field operations, metallurgical testing, and water monitoring were completed as part of preparations for an upcoming scoping study.

Leach Testing Supports ISR Mining Suitability

GTI Energy performed agitation leach testing on drill core samples obtained from the Lo Herma project. The testing was conducted using sodium bicarbonate and hydrogen peroxide to simulate alkaline ISR conditions. Results indicated consistent uranium recovery levels. Uranium concentrations in the leach solution were recorded within ranges comparable to other ISR operations across the Powder River Basin region.

Testing also showed controlled release of secondary elements including calcium, selenium, and arsenic. These remained within ISR-compliant parameters, supporting the application of alkaline ISR methods at Lo Herma. All metallurgical outcomes are being incorporated into the company’s current scoping study.

Groundwater Monitoring Wells Confirm ISR Viability

A total of four monitoring wells were drilled during the quarter to evaluate the hydrogeology of the targeted resource zones. Each well intercepted mineralised intervals exceeding the established cut-off grade for eU3O8. Samples from these wells have been used for both chemical testing and hydrological assessments.

Notable intercepts during drilling confirmed the presence of uranium mineralisation within aquifer-hosted sandstones. These results provide confirmation that the mineralisation lies entirely within saturated zones of the groundwater system, an essential condition for ISR mining.

Hydrogeological Analysis Demonstrates Adequate Permeability

Laboratory testing of core samples followed ASTM protocols to evaluate the permeability of host rock formations. Results suggested that the average hydraulic conductivity values fall within the upper threshold expected for ISR-compatible sandstone units.

Measurements taken from various drill holes confirmed vertical separation between the surface water table and the mineralised zones. This vertical separation ensures containment and supports safe ISR extraction procedures. Combined with permeability data, the findings validate ongoing development strategies for Lo Herma.

Progress on Scoping Study and Infrastructure Planning

All core fieldwork tied to the Lo Herma Scoping Study was finalised during the March quarter. Groundwater data, leach testing outcomes, and permeability evaluations were compiled into technical documentation for the study. Post-quarter, conceptual engineering designs and capital estimates were completed for ISR wellfield layout and associated plant infrastructure.

The scoping study, led by engineering consultant BRS Engineering, remains scheduled for delivery in the current quarter. The results of this study will assist in defining project pathways for the Lo Herma uranium resource.

Uranium Resource Position and Project Portfolio

GTI Energy retains full ownership of the Lo Herma project. The current mineral resource inventory for Lo Herma includes multiple tonnes of eU3O8-grade mineralisation, based on past drilling and laboratory evaluation.

The company’s broader Wyoming portfolio includes additional resources beyond Lo Herma. These projects contribute to a larger total uranium inventory across the Powder River Basin and nearby regions. GTI also holds brownfield uranium and vanadium projects in Utah, as well as greenfield licences in the Great Divide Basin and Green Mountain areas.

Corporate Update and Financial Standing

During the March quarter, GTI Energy reported exploration expenditure allocated toward drilling, laboratory testing, and project assessment activities. The company ended the quarter with cash and equivalents and retains access to additional standby equity capital facilities.

The company’s Annual General Meeting has been scheduled for early May, where updates on performance rights tied to project and resource milestones are expected to be presented.