
Mining operations dominated the landscape of the Iron Range during the mid-20th century, as shown by the extensive network of open pits and waste piles. Major industrial sites like the Arcturus Mine, Gross Marble Mine, and Hill Trumbull Mine carve deep into the terrain, surrounded by a complex system of Tailings Ponds and mine dumps. This activity centers around the residential hubs of Calumet, Marble, Taconite, and Holman, which provided housing for the workforce of the Mesabi Range.
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