Foremost Clean Energy drills high-grade unconformity mineralization at Hatchet Lake South Project, Saskatchewan
Foremost Clean Energy Ltd. [NASDAQ: FMST; CSE: FAT] provided an update from its ongoing 2026 drill program at the Hatchet Lake South Uranium Project, located in the eastern Athabasca Basin region of northern Saskatchewan. Drilling has intersected unconformity-related uranium mineralization in five drillholes, highlighted by 0.34% eU₃O₈ over 4.6 metres, including a high-grade interval of 1.0% eU₃O₈ over 1.4 metres. Three drill fences stepping out from discovery hole TF-25-16 (6.2 metres of 0.10% U₃O₈) have expanded the mineralized footprint of the system to over 150 metres of strike length now designated the “Tuning Fork Uranium Zone”. The zone is defined by continuous uranium mineralization and hydrothermal alteration along brittle reactivated structures at the Athabasca unconformity.
Highlights Include: 0.34% eU3O8 over 4.6 metres from 138.1 metres (includes 1.0% eU3O8 over 1.4m) in drill hole TF-26-30; 0.06% eU3O8 over 6.9 metres from 134.0 metres in drill hole TF-26-24 and 0.13% eU3O8 over 0.7 metres from 140.0 metres in drill hole TF-26-27A.
Jason Barnard, President and CEO, commented: “These preliminary results from our 2026 drill program at Hatchet Lake continue to build on the 2025 Tuning Fork discovery and on the strong geological foundation established by previous drilling completed by our largest shareholder and strategic ally, Denison Mines Corp. [TSX: DML; NYSE American: DNN]. Step-out drilling from drill hole TF-25-16 has now intersected uranium mineralization across three drill fences, expanding the mineralized footprint to over 150 metres of strike length, demonstrating the growing scale of the system.”
“The consistent presence of uranium mineralization and hydrothermal alteration at the unconformity across all drill fences is also highly encouraging. We are well positioned to keep expanding this area through continued drilling.
“We look forward to further advancing this exciting Tuning Fork Uranium Zone as we work to define its full scale and significance within the Hatchet Lake Project.”
Tuning Fork Uranium Zone: A total of 10 diamond drill holes (2,113 metres) have been completed to date as part of the company’s ongoing 2026 drill program at the Tuning Fork Uranium Zone. Of these, five holes intersected unconformity-related uranium mineralization meeting or exceeding the company’s reporting threshold of 0.05% eU₃O₈.
Uranium mineralization was intersected across three drill fences stepping out from the discovery hole TF-25-16, confirming continuity of the system along strike. Importantly, all completed drill holes encountered anomalous radioactivity (>2x background) and hydrothermal alteration at the Athabasca unconformity, expressed in both the overlying sandstone and underlying basement rocks.
The current interpreted footprint of uranium mineralization and associated hydrothermal alteration at the Tuning Fork Uranium Zone now extends over 150 metres of strike length.
As drilling continues, the company’s immediate focus will be on expanding the Tuning Fork Uranium Zone, which remains open along strike to the north. As a result of the encouraging findings to date, drilling is now being planned to test for further extensions of uranium mineralization and to better define the geometry and controls of the system, with the objective of vectoring toward higher-grade zones.
In parallel, the company intends to advance additional high-priority targets identified across the Hatchet Lake Project. These include the Tuning Fork West and Tuning Fork East target areas, as well as the Beta Grid at Hatchet Lake South, and the Richardson SE target area at Hatchet Lake North. These targets are supported by favorable geological, structural, and geophysical signatures consistent with unconformity-related uranium mineralization and represent compelling opportunities for future drill testing.
The company believes that the combination of continued success at the Tuning Fork Uranium Zone and a strong pipeline of untested, drill-ready targets positions Hatchet Lake as a highly prospective project for further uranium discoveries.
Following the completion of a drill hole, the hole is radiometrically logged using a downhole gamma probe, which collects continuous readings of radioactivity along the length of the drill hole. Final depth measurements and true thickness have not yet been determined.
Foremost Clean Energy is a North American uranium and lithium exploration company positioned to support the accelerating demand for reliable, carbon-free energy.
The company holds an option from Denison to earn up to 70% interest in 10 prospective uranium properties (except for the Hatchet Lake, where Foremost can earn up to 51%), spanning over 330,000 acres in the prolific, uranium-rich Athabasca Basin region of northern Saskatchewan. To date, Foremost has completed geophysical surveys and multiple drill campaigns that have generated encouraging results and defined high-priority, discovery-ready targets for follow-up drilling.
Foremost also has a portfolio of lithium projects at varying stages of development spanning 43,000+ acres in Manitoba, providing exposure to other critical materials essential in electrification and energy storage.