Denison Mines to fund 30% of 6,000m drill campaign at Murphy Lake North
DNN•Denison Mines will contribute 30% funding to a 6,000-metre, 15-hole drill program at Cosa Resources’ Murphy Lake North project starting mid-June. Winter 2026 drilling intersected up to 5.0 metres averaging 0.55% U3O8 within a structure open for 600 metres along strike.
1. Joint Venture Structure
Cosa Resources holds 70% of the Murphy Lake North project with Denison Mines owning the remaining 30% interest and funding its share of exploration costs. The project is located three kilometres east of the Hurricane deposit in Saskatchewan’s Athabasca Basin.
2. Upcoming Drill Program
The largest drilling campaign to date at Murphy Lake North will start in mid-June with approximately 15 holes totaling 6,000 metres, targeting step-out tests of the Cyclone trend around 265 metres below surface and untested fault zones along section 3200E.
3. Winter 2026 Drill Results
Winter 2026 drilling intersected up to 5.0 metres averaging 0.55% U3O8, including a 2.5-metre interval at 0.95% and a 0.5-metre high-grade interval at 1.70% U3O8, with mineralization remaining open for 600 metres along strike in both directions.
4. Project Timeline and Next Steps
Crews will mobilize in June and complete the summer program over roughly two months, followed by drilling at the Darby joint venture, with Denison maintaining its 30% stake throughout the 2026 exploration season.
