Radisson Mining Resources reports exploration and development activity for the 100%-owned O'Brien Gold Project in the Abitibi region of Québec. Company announcements focus on step-out drilling beneath the historic O'Brien gold mine, high-grade gold assay results, vein-hosted mineralization, geological modelling, and updates to mineral resource estimates.
Recurring developments also include metallurgical and preliminary economic assessment work tied to processing and project planning, site-operating updates, warrant exercises and other financing activity, and board or governance changes. The news record centers on how Radisson defines the scale, continuity, and potential development path of gold mineralization at O'Brien.
Radisson Mining Resources (OTCQX: RMRDF) reported assays from 15 new step-out drill holes at the 100%‑owned O'Brien Gold Project on October 28, 2025. All holes hit quartz‑sulphide gold veins; 13 returned intercepts consistent with existing resources. Key highlights include OB-25-371W5: 10.50 g/t Au over 6.5 m, OB-25-371W4: 11.25 g/t over 2.5 m, OB-25-376W1: 9.16 g/t over 2.5 m, and OB-24-337W11: 7.00 g/t over 3.0 m. Step-outs extend mineralization beneath historic workings by up to 160 m and demonstrate continuity between Trend #1 and Trend #2. The program is part of a fully funded 140,000‑metre drill campaign, with rigs increasing from four to an eventual eight.
Radisson (OTCQB: RMRDF) will expand the O'Brien step-out exploration drill program to 140,000 metres using up to eight drill rigs, making it the largest drill program in the project's history. The expansion follows a $25 million financing completed in October 2025 and aims to build on recent high-grade deep intercepts, including multiple wedges from a pilot hole showing high-grade veins.
The company cites an Exploration Target of 3–4 million ounces in 15–20 million tonnes at 4.5–8.0 g/t Au and notes the current MRE of 0.58 Moz Indicated and 0.93 Moz Inferred (effective May 6, 2025).
Radisson Mining Resources (OTCQB:RMRDF) announced significant drill results from its 100%-owned O'Brien Gold Project in Quebec, with fifteen new drill holes expanding the project's known gold mineralization. Key highlights include intersections of 8.41 g/t Au over 2.2m, 7.95 g/t Au over 2.30m, and 12.75 g/t Au over 1.4m.
The drilling program represents step-outs below the existing geological model, with some holes pushing mineralization downwards by up to 300 meters. The company's Exploration Target suggests potential for 3-4 million ounces of gold in 15-20 million tonnes at 4.5-8.0 g/t Au. Currently, four rigs are active at the project as Radisson focuses on aggressive exploration and resource growth following their recent Preliminary Economic Assessment.
Radisson Mining Resources (OTCQB: RMRDF) has filed a technical report for its O'Brien Gold Project in Quebec, detailing results of a Preliminary Economic Assessment (PEA). The PEA reveals strong economic potential with an after-tax NPV5% of $532 million and an IRR of 48% at US$2,550/oz gold.
The project features an 11-year mine life with expected production of 740,000 ounces of gold at an average recovery rate of 87%. Initial capital costs are estimated at $175 million, with all-in sustaining costs of US$1,059/oz. The project expects average steady-state gold production of 70,000 ounces annually during years 2-8, generating average annual after-tax free cash flow of $97 million.
Radisson Mining Resources (OTCQB: RMRDF) has announced a significant discovery of coarse visible gold in a new surface trench at its 100%-owned O'Brien Gold Project in Quebec. The discovery was made just 30 meters east of the O'Brien core shack and office complex, near the projected surface extension of the "Jewellery Box" zone.
The discovery follows the company's December 2024 drill intercept that yielded 643.1 g/t gold over 2.1 metres, including 1,345.0 g/t Au over 1.0 metre at approximately 200 metres vertical depth. The trench is the first of several planned for the summer exploration program, revealing a three-metre wide zone of Quartz-Sulphide-Gold veining with Z-fold structure.
This area lies outside the scope of the Project's Mineral Resources and recent Preliminary Economic Assessment, suggesting additional exploration potential.
Radisson Mining Resources (OTCQB: RMRDF) has reported exceptional drilling results from its 100%-owned O'Brien Gold Project in Quebec, achieving the highest-grade intercepts to date beneath the historic mine. The standout result came from drill hole OB-25-337W7, which intersected 89.36 g/t gold over 3.7 metres, including 293.0 g/t Au over 1.1 metres.
The company completed four new wedge extensions (OB-25-337W4 to W7) from its deepest pilot hole, demonstrating significant mineralization with up to six gold-bearing veins delineated over a 250m by 250m area. Additional drilling near the historic "Jewellery Box" zone returned notable results, including 4.32 g/t Au over 6.5 metres in OB-25-370.
These results are particularly significant as they fall outside the scope of the recently reported Preliminary Economic Assessment and suggest potential extension of the O'Brien mineralizing system to 2 kilometers depth, indicating substantial expansion potential for the project.
Radisson Mining Resources (OTCQB: RMRDF) announced a positive Preliminary Economic Assessment (PEA) for its O'Brien Gold Project in Quebec, revealing strong economic potential. The project demonstrates an after-tax NPV5% of C$532 million and an IRR of 48% at US$2,550/oz gold.
The PEA outlines an 11-year mine life with 740,000 ounces of gold production and an average steady-state production of 70,000 ounces annually during years 2-8. The project requires C$175 million in initial capital and features competitive costs with an AISC of US$1,059/oz.
The study assumes off-site toll milling at the nearby Doyon gold mill, reducing capital costs and environmental footprint. The project demonstrates strong economics with a 2-year payback period and potential for resource growth through ongoing drilling programs.