Foremost Clean Energy Announces Commencement of a 2,500m Diamond Drill Program at its Murphy Lake South Uranium Property, Athabasca Basin, Saskatchewan

Executive Summary

• Foremost Clean Energy Ltd. has mobilized crews to commence a Phase 1 diamond drill program at its Murphy Lake South Uranium Property in the Athabasca Basin, Saskatchewan.
• The program consists of 8 holes totaling 2,500 meters, designed to test high-priority targets identified by a recently completed Ambient Noise Tomography (ANT) survey.
• The primary target is the up-dip projection of historic drill hole MP17-19, which previously intersected significant uranium mineralization, aiming to test for unconformity-hosted uranium deposits.

Key Details

• Drill Program Scope: 8-hole, 2,500-meter diamond drill program.
• Location: Murphy Lake South Uranium Property, Athabasca Basin, northern Saskatchewan.
• Target Strategy: Testing high-priority targets based on a 3D velocity model generated from an Ambient Noise Tomography (ANT) survey completed in July 2025.
• Primary Target: Drill hole MP17-19, which previously intersected 7.5 metres of 234 ppm U1 within a graphitic structure in the basement rocks. The new drilling will test the up-dip potential of this mineralized structure.
• Drill Depth: Expected depths between 300 and 450 metres.
• Future Plans: A Phase 2 follow-up program is anticipated for the 2025/2026 winter drill season to expand on initial results.
• Historical Context: The 17,676-acre property is adjacent to the LaRocque Lake Conductive Corridor (host to IsoEnergy’s Hurricane Deposit). Historical drilling by Denison Mines intersected:
  • 0.25% U₃O₈ over 6 meters (MP-15-03)
  • 0.13% U₃O₈ over 12.5 meters just above the unconformity (MP-16-11)
  • 0.03% U₃O₈ over 22.5 meters from 255 to 277.5 meters (MP-16-17)
• Geological Setting: The property lies in the Mudjatik Domain, an area with strong uranium potential often overshadowed by the Wollaston Domain. The ANT survey helped image structural offsets, fault zones, and alteration halos to optimize drill hole placement.

Notable Quotes

• Jason Barnard, President and CEO: “The Murphy Lake South drill program will test high-priority targets in a world-class uranium district. This strategic exploration is particularly timely, as recent production cuts from major producers like Cameco are forecast to further tighten uranium supply, highlighting the critical need for new discoveries.”
• Jason Barnard, President and CEO: “We are excited to build on the results of our ANT survey, which provides a much sharper picture of the subsurface architecture to refine our targeting in the hopes of turning historic anomalies into a uranium discovery... By combining modern geophysics with these proven geological controls, we are methodically and systematically evaluating the highest-priority targets and are positioning Foremost for potential meaningful discovery.”