Northwire Canada EditionFriday, July 10, 2026
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TLO 5.37 +5.7% BNKR 4.88 +1.7% GG 2.25 +3.2% MJS 0.100 +5.3% PAAS 62.54 +3.6% PE 0.230 +0.0% SGML 17.19 +4.8% LAR 10.34 −1.1% NED 0.025 +0.0% GEN 0.080 +0.0% TVI 0.060 +0.0% SKYG 0.025 −37.5% WRLG 0.660 +6.5% FFU 0.120 −7.7% LOD 0.310 +3.3% CBI 0.110 +0.0% TLO 5.37 +5.7% BNKR 4.88 +1.7% GG 2.25 +3.2% MJS 0.100 +5.3% PAAS 62.54 +3.6% PE 0.230 +0.0% SGML 17.19 +4.8% LAR 10.34 −1.1% NED 0.025 +0.0% GEN 0.080 +0.0% TVI 0.060 +0.0% SKYG 0.025 −37.5% WRLG 0.660 +6.5% FFU 0.120 −7.7% LOD 0.310 +3.3% CBI 0.110 +0.0%
Drill Results Routine +

Cosa Announces Largest Drill Program to Date at Murphy Lake North with Participation from Denison Mines

Cosa Resources Advances Murphy Lake North with Denison Participation Following High-Grade Assay Confirmation

By The Northwire Desk — AI Analysis May 28, 2026 · 08:01 DML · 4.68 Denison Mines Corp.
Executive Summary
  • Drill Program Announcement: Cosa Resources Corp. announced its largest drill program to date at the Murphy Lake North (MLN) project, scheduled for mid-June 2026.
  • Program Scope: Approximately 6,000 metres across 15 drill holes over a two-month duration.
  • Target Focus: Step-out tests of Cyclone mineralization approximately 265 metres below surface; targeting major faults with alteration on section 3200E including area south of drill hole MLN26-016.
  • Joint Venture Structure: Murphy Lake North is a Joint Venture between Cosa Resources (70% interest/operator) and Denison Mines Corp. (30% interest).
  • Funding Terms: Denison Mines Corp. is participating in funding 2026 exploration at MLN to maintain its 30% interest.
  • Assay Context: The drilling follows up on winter 2026 results, specifically hole MLN26-013 which intersected 5.0 metres averaging 0.55% U3O8, including a high-grade interval of 0.5 metres at 1.7% U3O8 with coincident Nickel and Cobalt.
  • Mineralization Status: The Cyclone trend remains open along strike for 600 metres in both directions.
Material Impact
  • Confirmation of Grade: The news serves as an operational follow-up to the assay results released on May 26, 2026 (5.0m @ 0.55% U3O8 incl. 1.7%). While the grade confirmation was material in isolation, this announcement confirms management's confidence and capital deployment based on those results.
  • Scale of Program: The 6,000-metre program is Cosa's largest to date, signaling a significant escalation in exploration activity compared to previous winter programs (~2,500m at Darby). This suggests the company views MLN as its primary near-term value driver.
  • Strategic Partner Support: Denison Mines' continued participation and funding of the 30% interest validates the project's potential from a major industry player's perspective. However, this partnership was established in prior announcements (Jan/Mar 2026), so it is not new information.
  • Market Expectation: The summer drilling plan was anticipated following the Jan 21, 2026 announcement of winter plans and subsequent assay results. Therefore, while positive, the news is largely consistent with previous guidance rather than a surprise catalyst.
DML · Price
Company Overview
  • Company: Cosa Resources Corp., a uranium exploration company focused on the Athabasca Basin, Saskatchewan.
  • Flagship Project: Murphy Lake North (MLN) Joint Venture with Denison Mines. The Cyclone trend is the primary target, showing shallow mineralization (~265m depth) and polymetallic characteristics (Uranium, Nickel, Cobalt).
  • Secondary Projects: Darby Joint Venture (10 km west of Cigar Lake Mine) and Orion Project (wholly-owned).
  • Development Stage: Exploration/Drilling. No production assets currently in operation; value derived from resource expansion and potential future development.
Read the original news release →

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