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Drill Results Routine +

Cosa Commences Largest Drill Program to Date at the Murphy Lake North Uranium Joint Venture with Denison Mines

Cosa Resources launches a 6,000m summer drill program at Murphy Lake North following promising winter intercepts.

By The Northwire Desk — AI Analysis Jun 18, 2026 · 08:01 COSA · 0.6 Cosa Resources Corp.
Executive Summary
  • Cosa Resources has officially commenced its largest summer drill program to date at the Murphy Lake North (MLN) joint venture with Denison Mines.
  • The program consists of approximately 6,000 metres across 15 drill holes.
  • Primary objective is to evaluate extensions of the Cyclone uranium mineralization, which remains open along strike for 600 metres in both directions at a depth of ~265 metres.
  • Drilling will focus on untested faults and alteration zones at the unconformity, specifically south of hole MLN26-016.
  • The program follows up on significant winter 2026 assay results, notably hole MLN26-013 which returned 5.0m @ 0.55% U3O8 including a high-grade 0.5m interval at 1.70% U3O8.
  • Denison Mines is funding its 30% share of the 2026 exploration to maintain its interest.
  • MLN is located 3 km east of IsoEnergy's world-class Hurricane deposit.
Material Impact
  • The commencement of the summer drill program is an operational execution of plans previously announced in late May and early June 2026.
  • The market was already aware of the 6,000m program scope and the positive winter assay results. Therefore, the news is expected and incremental.
  • It validates management's ability to mobilize quickly and confirms Denison's continued financial and technical backing.
  • No new material catalysts or paradigm-shifting discoveries are announced. The impact on the stock price is likely neutral to mildly positive in the short term, as exploration-stage companies typically price in planned drilling campaigns.
  • Risk-averse perspective: The company remains in the exploration phase with no defined resources or reserves. Cash burn continues, and success is not guaranteed. The market will only reward actual high-grade intercepts, not the act of drilling itself.
COSA · Price
Company Overview
  • Cosa Resources Corp. is an exploration-stage uranium company focused on the Athabasca Basin in Saskatchewan, Canada.
  • Flagship project: Murphy Lake North (MLN), a 70% Cosa / 30% Denison Mines joint venture. Located 3 km east of IsoEnergy's Hurricane deposit, MLN hosts the Cyclone trend with significant structural alteration and uranium radioactivity.
  • Other key assets: Darby (70/30 JV with Denison, 10 km west of Cigar Lake), Packrat (70/30 JV), and 100% owned projects including Ursa, Orion, Orbit, Aurora (optioned to Traction Uranium), and Astro (optioned to Global Uranium).
  • The company has no mineral resources or reserves reported. All projects are in the exploration or target-generation phase.
Read the original news release →

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Oct 19, 2026 · 08:01

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Drill Results Sep 14, 2026 · 08:01

Cosa’s thirteen-hole summer follow-up missed the embedded anchor, returning weak CPS and no new U3O8 assays.

Drill Results Aug 04, 2026 · 08:01

Cosa advances Aurora targets with a partner-funded radiometric survey ahead of planned fall drilling.

Drill Results