Denison Announces Exciting New Discoveries at McClean South Uranium Project
Toronto, ON – July 21, 2025 – Denison Mines Corp. is pleased to announce significant new discoveries of high-grade uranium mineralization at its McClean South uranium project, located in the prolific Athabasca Basin of Saskatchewan, Canada. The company has revealed the results of its recent exploration drilling program, which has further delineated and expanded upon previously identified mineralized zones.
This latest drilling campaign, a continuation of Denison’s ongoing exploration efforts at McClean South, has successfully intersected additional zones of uranium mineralization demonstrating robust grades and thicknesses. The program focused on testing extensions to known mineralization and exploring promising new targets identified through geophysical surveys and geological modeling.
Highlights from the announced drilling results include several intercepts that underscore the high-grade nature of the deposit. These findings are particularly encouraging as they suggest potential for further growth of the McClean South resource. Denison’s technical team is currently analyzing the full dataset from the drilling program, with detailed assays and geological interpretations expected to be incorporated into updated resource models in the near future.
McClean South is part of Denison’s broader strategic land package in the Athabasca Basin, an area renowned for hosting some of the world’s largest and highest-grade uranium deposits. The project benefits from its proximity to existing infrastructure and historical mining operations, which can potentially facilitate future development.
“We are very encouraged by these latest drill results from McClean South,” stated a spokesperson for Denison Mines. “The discovery of additional high-grade uranium mineralization further solidifies our belief in the significant potential of this project. Our focused exploration approach continues to yield positive outcomes, and we are eager to advance our understanding of the deposit’s full scope and economic viability.”
Denison remains committed to a systematic and disciplined exploration strategy, prioritizing projects with the potential to deliver substantial shareholder value. The company plans to continue its exploration and evaluation activities at McClean South, with a view to further defining and potentially expanding the mineralized footprint. These ongoing efforts are a testament to Denison’s dedication to unlocking the full potential of its Athabasca Basin assets.
Further updates on the McClean South project, including detailed drill results and updated resource estimates, will be provided as they become available.
Denison Announces Additional High-Grade Uranium Mineralization Discovered at McClean South
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