TMCR’s $133M Mesabi iron ore royalty: project scale and cashflow notes for mine planners
Reviewed by Joe Ashwell

First reported on MINING.com
30 Second Briefing
TMCR is paying $132.5 million for a 1% index-priced gross overriding royalty on Mesabi Metallics’ Nashwauk taconite project in Minnesota, which is designed for up to 8.5 million tonnes per year of direct-reduction-grade pellets over a 23+ year mine life. The nearly 93%-complete mine and pellet plant, backed by India’s Essar Group and up to $10 billion in US Export-Import Bank support, targets first output in H2 2026 and full production in 2027. TMCR will fund the deal via a $75 million private placement at $13 per share and a proposed $50 million senior secured credit facility.
Technical Brief
- TMCR’s 1% gross overriding royalty includes an index-linked revenue floor tied directly to iron ore prices.
- Essar Group has already invested over $2 billion into mine and pellet plant construction and infrastructure.
- The US Export-Import Bank has approved up to $10 billion in financial backing for the project.
- Project completion is reported at about 93%, limiting remaining capex and construction risk before commissioning.
- TMCR expects up to $13 million per year in royalty cash flow once nameplate production is reached.
- Acquisition funding comprises a $75 million private placement at $13/share plus a proposed $50 million secured facility.
- TMCR insiders, including founders, are committing $15 million of the equity raise, increasing alignment with project performance.
- TMC retains roughly a 25% equity stake in TMCR and options to repurchase portions of associated royalties.
- TMCR also holds an option to acquire an additional 1% royalty interest on Mesabi after closing.
Our Take
TMCR’s move from a 2% royalty on TMC’s NORI polymetallic nodule project into a 1% iron ore royalty at Mesabi shifts part of its portfolio from high‑regulatory‑risk deep‑sea mining into a more conventional US onshore asset, which may help diversify perceived permitting and ESG risk among royalty investors.
With Mesabi in Minnesota backed for up to $10 billion by the US Export‑Import Bank and already 93% complete, the project sits in a different risk class to many of the critical‑minerals stories in our recent US coverage, where permitting and early‑stage funding rather than construction completion are the main bottlenecks.
The $75 million private placement at $13 per share, alongside a proposed $50 million credit facility and $15 million from TMCR founders and insiders, effectively leverages a sub‑$1 billion market capitalisation company into a long‑life (>23 years) iron ore royalty, signalling an aggressive balance‑sheet strategy compared with other newly listed royalty vehicles in our database.
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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