Denison Mines Corp. (TSX:DML; NYSE:DNN) has announced that multiple new intercepts of shallow high-grade uranium mineralization have been discovered at the McClean South zone at the company’s 22.5%-owned McClean Lake Joint Venture in Saskatchewan.
The JV is 77.5% owned and operated by Orano Canada, who completed a 6,400m exploration drilling programme at McClean South in the H1 2025. Multiple notable high-grade intersections were discovered at the 8C mineralized pod:
- MCS-77 intersected 7.51% eU3O8 over 5.4 metres from 165.7 to 171.1 metres (including 10.88% eU3O8 over 3.7 metres),
- MCS-80 intersected 3.5% eU3O8 over 11.2 metres from 156.7 to 167.9 metres (including 5.81% eU3O8 over 6.5 metres), and
- MCS-84 intersected 1.72% eU3O8 over 20.6 metres from 150.6 to 170.7 metres (including 4.43% eU3O8 over 4.0 metres)
14 of 24 completed drill holes from this drill programme encountered significant intercepts of uranium mineralization measuring greater than 0.05% eU (0.06%eU3O8). The current exploration programme was meant to expand the existing footprint of high-grade mineralization and to assess the 8C and 8W pods.
David Cates, Denison’s President & CEO, commented on the results, “We congratulate and thank Orano Canada for its efforts to successfully advance the delineation and expansion of the high-grade mineralization at McClean South. With the nearby McClean North deposit recently entering production using the joint venture’s SABRE mining method and Denison having made significant advancements in the de-risking of the In-Situ Recovery (‘ISR’) mining method in recent years, there is great potential for the MLJV to advance McClean South to potentially emerge as an economic new source of future feed to the McClean Lake mill.”
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