Books by Leonard F. Heising — EbookNetworking.net

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Lake Superior iron resources: Reexamination of nonmagnetic taconite occurrences in the Hibbing, Minn., area by flotation, magnetic separation, and petrographic methods (Report of investigations)
Leonard F Heising
U.S. Dept. of the Interior, Bureau of Mines
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Open-pit iron mining, milling, and costs, Groveland Mine, the Hanna Mining Co., Dickinson County, Mich.
Leonard F. Heising
University of Michigan Library
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