With Step-Out Drilling Continuing, Radisson Demonstrates Meaningful Resource Growth at O'Brien with an Updated Mineral Resource Estimate
Radisson transforms O’Brien from "boutique" high-grade mine to scalable Abitibi beast with 82% inferred resource surge.
The most recent news (March 2, 2026) announces a significant update to the Mineral Resource Estimate (MRE) for the 100%-owned O'Brien Gold Project. Key highlights include: - Inferred Resources: Increased by 82% to 1.69 million ounces (10.37 Mt at 5.08 g/t Au). - Indicated Resources: Increased by 8% to 0.63 million ounces (3.49 Mt at 5.59 g/t Au). - Total Inventory: Now stands at 2.32 million ounces. - Exploration Target: Management established a new target of an additional 0.6 Moz to 2.0 Moz at depths between 1km and 2km. - Strategy Shift: The company is moving away from targeting "extreme grade/limited scale" to a "mechanized mining/higher throughput" model.
This news is Material - Positive because it validates the "proof-of-concept" deep drilling strategy initiated in late 2024. - Scale Validation: Doubling the inferred resource confirms that the O'Brien system is not just a shallow, high-grade pocket but a robust, deep-rooted Abitibi system. - De-risking: The use of a lower cut-off grade (2.2 g/t vs previous 4.5 g/t) and a more restrictive capping approach (reducing average grade by 12%) suggests a more conservative and realistic mine plan, which is favorable for future institutional financing. - Infrastructure Advantage: The project benefits from an existing 1,000m shaft and proximity to underutilized mills (e.g., IAMGOLD’s Doyon mill), significantly lowering the barrier to production. - Valuation Support: With over 2.3 Moz in total resources, Radisson is transitioning from a junior explorer to a serious developer in a Tier-1 jurisdiction.
Radisson Mining focuses on the O'Brien Gold Project in the Bousquet-Cadillac mining camp, Quebec. O'Brien was historically the highest-grade gold producer in Quebec (>15 g/t). The project is located on the Larder-Lake-Cadillac Break, a world-class gold structure. The flagship project now boasts 2.32 Moz of resources and is being fast-tracked toward a production decision using a toll-milling model.