08/31/2026
Built over generations, the industrial infrastructure of Minnesota and Michigan—spanning mines, pellet plants, rail, and Great Lakes shipping—directly fuels American steel mills. Supported by an experienced workforce, this domestic resource base is poised to play an even more vital role in the future of U.S. steel manufacturing.
America's Taconite Mines are foundational national security assets.
As China expands its influence over the global iron ore market and invests directly in some of the world’s largest high-grade deposits, the strategic importance of America's domestic iron ore supply chain is becoming increasingly clear.
For more than a century, Minnesota has been America's leading producer of iron ore, with the industry evolving from high-grade natural ore in the 50's to taconite production that continues to supply American steelmakers today.
During World War I and World War II, Minnesota's Iron Range supplied enormous quantities of the iron ore that fed America's steel mills, providing the raw material needed to manufacture ships, tanks, aircraft, weapons, railroads and the industrial infrastructure that supported America's war efforts.
The Great Lakes iron ore industry was a strategic national asset then, and it remains one today.
Today, seven taconite mines in Minnesota and Michigan form the foundation of America's domestic iron ore supply chain:
✅ Minntac — Minnesota — U.S. Steel
✅ Tilden Mine — Michigan — Cleveland-Cliffs
✅ Keetac — Minnesota — U.S. Steel
✅ United Taconite — Minnesota — Cleveland-Cliffs
✅ Northshore Mining — Minnesota — Cleveland-Cliffs
✅ Hibbing Taconite — Minnesota — Cleveland-Cliffs and U.S. Steel
✅ Minorca Mine — Minnesota — Cleveland-Cliffs
Together, these operations support something increasingly valuable in today's world: a vertically integrated American supply chain capable of turning domestically mined iron ore into domestically produced steel.
Minnesota and Michigan have the resources, mines, pellet plants, railroads, Great Lakes shipping infrastructure, skilled workforce and connections to American steel mills that have been built over generations.
And this domestic resource base can become even more important to the future of American steelmaking.
Investments in beneficiation and DR-grade pellet production, combined with America's growing DRI and HBI capabilities, can give Great Lakes iron ore the flexibility to support both traditional integrated steelmaking and the growing use of electric arc furnaces.
We're already seeing that transition take place.
United States Steel Corporation's Keetac Mine in Minnesota is producing DR-grade pellets for next-generation steelmaking, while Cleveland-Cliffs's Northshore Mining is producing DR-grade pellets that supply the company’s HBI facility in Toledo, Ohio.
As the United States rebuilds its manufacturing base and works to strengthen its defense industrial base, these mines should be recognized for what they are:
Strategic national assets.