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Analysis of 494 accidents, open-pit iron-ore mines, beneficiation plants, and shops Lake Superior District

Published Year

• 1950-1959 (1)

Subject

• Iron mines and mining--Superior, Lake (1)
• Mine accidents--United States (1) *

Author

• Look, A. D. (1)
• Pynnonen, R. O. (1) *
• Zaverl, L. J. (1)

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