Niron $150M iron nitride magnet plant: supply chain signals for materials engineers
Reviewed by Tom Sullivan
First reported on MINING.com
30 Second Briefing
Niron Magnetics has secured a $150 million loan from the Shakopee Mdewakanton Sioux Community and a conditional $150 million, 20‑year direct loan commitment from the US Department of War’s Office of Strategic Capital to build its first full‑scale iron nitride magnet plant in Sartell, Minnesota. The facility, targeting start-up in 2027, will manufacture rare-earth-free iron nitride permanent magnets, aiming to establish a domestic supply for defence and other critical industries. For materials and mining suppliers, the project signals growing demand for iron-based magnet feedstocks and equipment for end-to-end magnet manufacturing lines.
Technical Brief
- Loan from Shakopee Mdewakanton Sioux Community (SMSC) totals $150 million for Sartell plant equipment and operations.
- SMSC has been financially backing Niron since 2016, from lab-scale iron nitride research to scale-up.
- Community also joined Niron’s 2023 financing syndicate, funding end-to-end manufacturing capability in Minneapolis.
- Conditional OSC direct loan adds up to $150 million over a 20‑year term for construction and kit.
- Sartell facility is Niron’s first full-scale magnet manufacturing plant, distinct from earlier pilot operations.
- SMSC investment strategy explicitly links to environmental stewardship and local economic development in Minnesota.
Our Take
The related August 2026 item on the OSC’s conditional $150 million loan shows that Niron Magnetics is being positioned not just as a commercial supplier but as part of a defence-linked critical magnet supply chain, which will matter for qualification, cybersecurity and export‑control compliance at the Sartell plant.
With a 2027 deadline for US defence manufacturers to cut reliance on Chinese‑origin rare earth magnets, an iron‑ore‑based, rare‑earth‑free product from Minnesota gives OEMs a domestic compliance pathway that avoids the permitting and ESG risks tied to new rare earth mines in our recent Materials coverage.
The long‑term backing from the Shakopee Mdewakanton Sioux Community since 2016 suggests that Indigenous capital is starting to appear not only on the resource side but also in downstream magnet manufacturing, which could influence how future US critical‑materials projects structure equity and community participation.
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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