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A resource for reliable information about significant people, places, events, and things in Minnesota history.
Pilotac, an experimental taconite concentrating plant built by the Oliver Mining Division of United States Steel. The plant went into operation at Mountain Iron in 1953 as Minnesota Ore Operation’s Minntac plant.
Made possible by the Arts and Cultural Heritage Fund through the vote of Minnesotans on November 4, 2008. Administered by the Minnesota Historical Society.
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