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Analysis of 346 accidents, underground iron-ore mines, Lake Superior district

Published Year

• 1950-1959 (1)

Subject

• Iron mines and mining--Accidents (1) *

Author

• Johnson, J. A. (1) *
• Pynnonen, R. O. (1)
• Stepan, J.B. (1)
• Stott, R.G. (1)

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