Seven Drill Holes Complete at Oasis with 1,000m Drilled; Assay Results Imminent

• Seven drill holes (~1,000m) completed with five more planned
• Program aims to confirm historical data and test mineralisation at depth and along strike
• Spectral gamma logging and Acoustic Televiewer imaging underway
• Initial assay results expected imminently
• Regional rock chip sampling reveals significant uranium 4.5km northeast of Oasis

Maiden Drilling Progress at Oasis

Greenvale Energy Limited (ASX, GRV) is making solid headway in its maiden drilling program at the Oasis Uranium Project in Queensland. Since commencing in late July 2025, the company has completed seven drill holes totaling approximately 1,000 metres, combining reverse circulation and diamond core drilling techniques. With five additional holes planned, the program is expected to wrap up by early to mid-September.

The drilling campaign has three primary objectives, to validate historical drilling data, extend known uranium mineralisation at depth, and explore lateral extensions along the strike of the deposit. Early operational reports indicate the program is proceeding safely and efficiently, with no incidents recorded.

Advanced Logging and Assay Preparations

Greenvale has deployed spectral gamma logging and Acoustic Televiewer (ATV) imaging on the initial seven diamond drill holes. These technologies provide detailed real-time insights into subsurface geology, differentiating uranium from other elements and mapping structural features such as fractures and bedding orientation. Samples from the first drill hole have been dispatched to Intertek Laboratories in Adelaide for chemical analysis, with assay results expected within the next one to two weeks. These results will calibrate the spectral gamma data, enhancing the accuracy of mineralisation assessments.

Testing Extensions and Regional Potential

The ongoing drilling will continue to test the northern and deeper extents of the mineralised structure, with particular focus on confirming continuity and improving the geological model. Notably, recent reconnaissance mapping and rock chip sampling in the broader region have yielded encouraging results. One sample taken approximately 4.5 kilometres northeast of the Oasis deposit returned a uranium grade of 187.4 ppm, a strong indication of uranium mineralisation beyond the immediate project area. This finding suggests the potential for a more extensive mineralised system, warranting further exploration.

Context and Next Steps

The Oasis Uranium Project sits within a well-documented geological setting, with historical exploration dating back to the 1970s. Greenvale’s current drilling aligns with previous data but aims to refine and expand the understanding of the deposit. The company’s methodical approach, combining modern drilling techniques with advanced geophysical logging and rigorous sampling protocols, positions it well to unlock further value.

As assay results come to hand and the drilling program concludes, Greenvale is poised to update the market on the implications for resource potential. The broader regional anomalies identified also open new avenues for exploration, potentially expanding the project’s footprint.

Bottom Line?

Greenvale’s drilling momentum and promising regional uranium findings set the stage for a pivotal update in the coming weeks.

Questions in the middle?

• What will the initial assay results reveal about uranium grades and mineralisation continuity?
• How might the regional uranium anomaly 4.5km northeast influence Greenvale’s exploration strategy?
• Will the drilling confirm extensions sufficient to justify an updated resource estimate soon?