Exiro-led takeover of Vale’s Manitoba nickel complex: key points for mine planners
Reviewed by Joe Ashwell
First reported on MINING.com
30 Second Briefing
Exiro Minerals, Orion Resource Partners and Canada Growth Fund have acquired an 81.1% stake in Vale’s Thompson nickel operations in northern Manitoba, committing up to US$200 million to sustain and develop the six-decade-old complex. The new vehicle, Exiro Nickel, takes over day-to-day control of two operating underground mines, the adjacent concentrator and exploration ground along the 135 km Thompson Nickel Belt, while Vale Base Metals retains an 18.9% interest. A multi-year offtake agreement keeps Vale buying nickel concentrate from the Thompson mill, providing a defined outlet for future production.
Technical Brief
- Transaction closes a strategic review of Thompson launched by Vale Base Metals in January 2025.
- Ownership restructuring positions Thompson as a “district-scale” nickel asset rather than a single-mine operation.
- Two operating underground mines plus an on-site mill remain in continuous operation during the ownership transition.
- Exploration tenure spans the 135 km-long Thompson Nickel Belt, giving substantial brownfields and near-mine drill targets.
- Workforce includes multi-generation employees, supporting retention of site-specific operational and geotechnical knowledge.
- Similar mature nickel camps with latent exploration potential may look to comparable JV-style capital structures to unlock reinvestment.
Our Take
The related 19 February 2026 item on the same Thompson Mine Complex notes up to US$200 million of planned investment by Vale Base Metals, Exiro, Orion and Canada Growth Fund, signalling that this 81.1% change of control is tied to a funded reinvestment phase rather than a simple divestment.
With Thompson sitting on a 135 km-long nickel belt in Manitoba and Vale retaining an 18.9% interest, this looks structurally similar to other base-metals deals in our database where majors keep a minority stake to preserve offtake and optionality on critical minerals without carrying full operating risk.
Among recent critical minerals coverage in Canada, Thompson’s mix of nickel, cobalt and PGMs positions it as one of the few long-lived underground complexes (over six decades of operation) where new capital is going into brownfield optimisation rather than greenfield build-out, which can shorten timelines for any throughput or recovery upgrades.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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