Cosa Resources – Winter Drilling Has Commenced At Darby Project, With Murphy Lake North To Follow
The KE Report Feb 3, 2026
Summary
Cosa Resources has begun ~2,500m of winter drilling at its Darby uranium project in the Athabasca Basin, a 70/30 JV with Denison Mines.
Four priority targets came out of relogging historic core, chasing sandstone-alteration signatures near graphitic basement faults.
Murphy Lake North drilling (~1,200m) follows in March, filling a 1,200m gap along the Cyclone trend from 2025.
Targets sit at 500-650m depth near Cigar Lake; management argues Cosa tight share structure could amplify a discovery re-rate.