With Step-Out Drilling Continuing, Radisson Demonstrates Meaningful Resource Growth at O’Brien with an Updated Mineral Resource Estimate

Radisson Mining Resources Inc. (TSX-V: RDS, OTCQB: RMRDF) (“Radisson” or the “Company”) is pleased to report an updated Mineral Resource Estimate (“MRE”) at its 100%-owned O’Brien Gold Project (“O’Brien” or the “Project”) located in the Abitibi region of Québec. The Company is currently undertaking a fully-funded 140,000-metre step-out drill program at the Project with the objective of determining the scope of mineralization to a depth of 2 kilometres. This program commenced in 2025 and is expected to continue through the first half of 2027. Today’s updated MRE is an interim report that demonstrates the impact of recent drilling successes completed as of December 31, 2025. Highlights include: Matt Manson, President and CEO: “Today we report the first of several planned, step‑by‑step updates to the MRE at the O’Brien Gold Project, quantifying the impact of our recent drilling success and establishing a clear foundation for future, modern mine development. With just 25% of our 140,000 metre step-out drill program completed, the new vein mineralization delineated beneath the historic mine workings and the previous mineral resource volume (Radisson news release dated February 12, 2026) has resulted in an 82% increase in the quantity of Inferred Mineral Resources, now 1.69 Moz (10.37 Mt […]