Pilotac, an experimental taconite-concentrating plant

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.

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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.

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Minnesota Historical Society

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