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.

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