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Updated:Apr 23, 2026
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Iron Ore Mining in the Lake Superior Region (1850-1914)

Iron Ore Mining in the Lake Superior Region (1850-1914)

  1. Surveyors document Marquette Range iron discovery

    Labels: William A, Marquette Range, Negaunee Michigan

  2. Jackson Mining Company launches organized iron mining

    Labels: Jackson Mining, Marquette Range

  3. Cleveland Iron Mining Company forms to develop ore trade

    Labels: Cleveland Iron, Cleveland investors

  4. First Lake Superior blast furnace begins operating

    Labels: Jackson Mine, blast furnace

  5. Soo Locks open, enabling large-scale ore shipping

    Labels: Soo Locks, Sault Ste

  6. Civil War demand accelerates Marquette Range output

    Labels: Marquette Range, Civil War

  7. Menominee Range begins shipping ore from new mines

    Labels: Menominee Range, Breen Mine

  8. Chapin Mine discovery strengthens Menominee production

    Labels: Chapin Mine, Iron Mountain

  9. Gogebic Range ships first ore after rail access

    Labels: Gogebic Range, Colby Mine

  10. Duluth & Iron Range ships first ore to Two Harbors

    Labels: Duluth &, Two Harbors

  11. Mesabi ore discovery near Mountain Iron reshapes industry

    Labels: Mesabi Range, Mountain Iron

  12. Duluth, Missabe & Northern Railway is chartered

    Labels: Duluth Missabe, railroad

  13. Mountain Iron Mine opens as first Mesabi mine

    Labels: Mountain Iron, Mesabi Range

  14. Oliver Iron Mining Company incorporates, consolidating control

    Labels: Oliver Iron, Henry W

  15. Financial crisis shifts Mesabi assets toward Rockefeller

    Labels: John D, Merritt holdings

  16. Hull–Rust–Mahoning area begins major mechanized open-pit mining

    Labels: Hull Rust, Hibbing Minnesota

  17. United States Steel forms, integrating Mesabi mining and steelmaking

    Labels: United States, Oliver Iron

  18. By 1914, Lake Superior ore system underpins U.S. industrial output

    Labels: Lake Superior, rail-and-dock networks