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Drilling and blasting, open-cut iron-ore mines, Lake Superior District
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Published Year
1950-1959 (1)
Subject
Iron mines and mining--Michigan (1)
Iron mines and mining--Minnesota (1) *
Iron mines and mining--Wisconsin (1)
Strip mining (1)
Author
Anderson, Floyd G. (1) *
Johnson, John A. (1)
Stott, Roy G. (1)
