Rouyn-Noranda, Quebec — January 6, 2026 — Leads & Copy — Radisson Mining Resources Inc. (TSXV: RDS) (OTCQX: RMRDF) has announced assay results from six new drill holes completed at its 100%-owned O’Brien Gold Project in Québec’s Abitibi region.
The six holes are part of the company’s ongoing 140,000-metre step-out drill program designed to test the scope of gold mineralization at the Project. Two of the holes are the twelfth and thirteenth directional wedges completed from pilot hole OB-24-337, expanding the area of high-grade mineralization across multiple veins beneath the historic O’Brien Gold Mine.
All six holes intersected gold mineralization, with five returning intercepts with grades and thicknesses consistent with the Project’s existing mineral resources.
Highlights include:
- OB-25-337W13: 90.60 grams per tonne (“g/t”) gold (“Au”) over 1.0 metre within a mineralized interval averaging 30.59 g/t Au over 3.0 metres and 9.14 g/t Au over 2.7 metres, including 16.35 g/t Au over 1.4 metres.
- OB-25-337W12: 25.10 g/t Au over 1.5 metres, 14.20 g/t Au over 1.5 metres, and 11.40 g/t Au over 1.3 metres.
- OB-25-322W2: 3.11 g/t Au over 8.0 metres including 5.93 g/t Au over 1.5 metres and 3.62 g/t Au over 4.0 metres including 6.33 g/t Au over 1.5 metres.
- OB-25-322W1: 4.02 g/t Au over 4.5 metres, including 8.29 g/t Au over 1.5 metres.
Radisson President and CEO Matt Manson said the drill holes continue to illustrate the extension of the Project’s system of gold mineralization below the historic O’Brien mine and the current mineral resources. He noted the new wedges completed from pilot hole OB-24-337 are located beneath the former mine’s final stope.
The company has modeled a system of gold mineralization as up to six veins delineated over a 250-metre (east-west) by 500-metre (vertical) area that remains open. Radisson has completed 74 drill holes in the 140,000 metres program, 61 of which have intersected mineralization with grades and thicknesses consistent with the Project’s current mineral resources, an 82% success rate. Seven drill rigs are operating at the site, with an eighth rig being added.
Twelve additional step-out drill holes, including the final OB-24-337 wedges, have been completed and are awaiting assays.
Since the end of 2024, Radisson has been pursuing a program of broad step-outs beneath the historic O’Brien Gold mine and the existing mineral resources designed to test the extent of mineralization at the Project. This drilling is accomplished with pilot holes followed by wedges and directional drilling to maximize drill efficiency. On October 16, 2025, Radisson announced the expansion of the step-out drill program to 140,000 metres employing an eventual eight drill rigs.
The origin of the step-out drill program was the deep pilot hole OB-24-337, which was the first exploration drill hole located below the former mine workings since mining ended in 1957. This hole intersected 31.24 g/t Au over 8.0 metres, including 242.0 g/t Au over 1.0 metre at approximately 1,500 metres vertical depth.
Assay results from a total of thirteen wedges from OB-24-337 have been reported and up to six gold-bearing veins have been delineated over an area of approximately 250 metres (east-west) by 500 metres (vertical). The thirteenth wedge, released today, intersected 9.14 g/t Au over 2.7 metres including 16.35 g/t Au over 1.4 metres within Piché rocks just 40 metres below the final historic mining stope.
The final two wedges, the fourteenth and fifteenth, have been completed and assay results are expected shortly. Future drilling in this area will utilize new pilot holes and wedge extensions to test the full scope of mineralization down to 2 kilometres depth.
Today’s results also include the first and second wedges completed from pilot drill hole OB-24-322, which intersected high-grade mineralization on the downwards extension of Trend #1 at 1,280 metres and 1,360 metres vertical depth, respectively. These two wedges appear to have intersected the same mineralized zone over a vertical separation of 80 metres, returning similar intercepts of 4.02 g/t Au over 4.5 metres, including 8.29 g/t Au over 1.5 metres (OB-25-322W1) and 3.11 g/t Au over 8.0 metres including 5.93 g/t Au over 1.5 metres and 3.62 g/t Au over 4.0 metres including 6.33 g/t Au over 1.5 metres (OB-25-322W2). Additional drill wedges from OB-24-322 have been completed and assays are pending.
Drill hole OB-25-371W7 is the seventh wedge from a pilot hole centered on the deep extension of Trend #2. It returned three separate intercepts of gold mineralization that were short, but with grades and thicknesses consistent with the Project’s mineral resources, in an untested area on the western side of Trend #2 towards the deep extension of Trend #1. The Company considers the apparent “gap” between the deep extensions of these two mineralizing trends to be a function of drill coverage rather than mineralization. This area offers a significant opportunity to delineate future mineral resources at relatively shallow depths and within the scope of the mine design contained in the Project’s 2025 Preliminary Economic Assessment. Further drill testing here will be an important part of the upcoming 2026 work program. The sixth drill hole release today, OB-25-377, was located in a gap area between the western and eastern portions of the former mine and intersected three narrow zones of minor mineralization.
Matt Manson
President and CEO
416.618.5885
mmanson@radissonmining.com
Kristina Pillon
Manager, Investor Relations
604.908.1695
kpillon@radissonmining.com
Source: Radisson Mining
