GTI Energy Ltd (ASX:GTR, OTC:GTRIF) is forging ahead with its 2024 drilling campaign at the Lo Herma In-Situ Recovery (ISR) Uranium Project in Wyoming’s Powder River Basin, completing 66 of 76 planned drill holes or 87% of the current program.
The newest drill results, backed by historical data purchased in 2023, will support GTI’s ongoing efforts to update the project's mineral resource and exploration target estimates.
Strong mineralisation
Key results from the current program include strong mineralised intersections stretching 2 kilometres north from the existing mineral resource area.
Drill hole LH-24-028, for example, returned an intersection of six feet at 0.123% equivalent uranium oxide (eU₃O₈), while drill hole LH-24-063 recorded 11 feet at 0.054% eU₃O₈.
Mineralisation continues across multiple sandstone units, expanding the project’s potential resource area.
The Powder River Basin has been a key uranium production area in Wyoming since the 1970s, and GTI’s results at Lo Herma demonstrate the region's continued potential for ISR uranium production.
Lo Herma benefits from its proximity to several existing ISR uranium production facilities, which include UEC’s Willow Creek and Cameco’s Smith Ranch-Highland plants.
Confidence in uranium resource
GTI executive director and CEO Bruce Lane said: “Drilling to date at Lo Herma has been very successful in demonstrating extensions of mineralisation, with strong GT [grade thickness] numbers to the north of the project area and at depth in the sands of the lower Wasatch formation.
“Results so far give us great confidence that we can grow the global uranium resource estimate and upgrade a material portion to the indicated category.
“Drilling is currently running to schedule with operations now moved to the east of the project area to test for deeper mineralisation in the Fort Union formation.
“The sand units of the lower Wasatch formations are showing reliable continuity and mineralisation far along trend to the north so we are now excited to see what the deeper Fort Union formation sands may hold as we move to our final exploration area for this phase of drilling.”
What’s next?
GTI plans to complete the remaining ten holes in the program, focusing on deeper mineralisation in the Fort Union formation in the eastern section of the project.
The company is also establishing groundwater monitoring wells to support future development.
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