Processing Legacy Iron Ore for a Sustainable Future
Writing the next chapter of Minnesota’s Iron Range, and transforming a proud mining legacy into a model of modern sustainability.
Calumet Reclamation Company is unlocking generational opportunity in Minnesota
Calumet Reclamation Company reclaims historic iron ore stockpiles at the Hill Annex Mine to sustainably supply its sister company, North American Iron, with feedstock for pig iron production in North Dakota.
Calumet Reclamation Company will recover stockpiles left behind by past mining—materials already extracted and ready to be put to use. This reclamation-based approach makes full use of existing resources, maximizes land potential, protects surrounding ecosystems, and creates long-term regional value through jobs, school trust revenue, and infrastructure use.
Hill Annex Mine History Overview
Hill Annex Mine operated from 1913 to 1978, producing millions of tons of iron ore and employing several hundred workers at its peak, making it the sixth-largest producer at the time.
The mine used a heavy media separation process to extract high-grade ore, leaving behind significant resources in legacy stockpiles and tailings.
The Iron Range Resources and Rehabilitation Board later managed the site to preserve its mining history until it could return to active mining and reclamation.
Legacy Hill Annex Mine Snapshot
Operated 1913–1978, producing millions of tons of iron ore.
Historic ore stockpiles supported by decades of proven reserves.
Accessible by highway and adjacent to rail.
Land is part of Minnesota School Trust.
Millions of tons of stockpiled ore available for reclamation.
From Reclamation in MN to Production in ND
Calumet Reclamation Company and North American Iron are sister companies—owned and led by the same team committed to sustainably reclaiming legacy iron ore to revitalize America’s steel supply chain.
Calumet Reclamation Company will recover decades-old iron ore stockpiles in Minnesota. The material will then be transported by rail to North Dakota, where North American Iron will produce high-purity pig iron, an essential building block for U.S. steelmakers.
Reclaim, Restore, Repurpose
Stockpiles are carefully run through crushing, screening, and heavy media separation to recover high-quality iron ore. Once the material is recovered, the land will be restored and available for future use
This approach puts existing resources to work, continuing the Iron Range’s role as a cornerstone of Minnesota’s economy and America’s steel supply.
