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Some coal-mine safety organizations in the Pennsylvania bituminous field

A ventilation study of the Graceton Coal & Coke Co. mine, Graceton, Pa.

Published Year

• 1930-1939 (2)

Subject

• Bituminous coal--Pennsylvania (1)
• Coal miners--Pennsylvania (1)
• Coal mines and mining--Pennsylvania--Safety measures (1)
• Coal mines and mining--Safety measures (1)
• Mine ventilation (1)

Author

• Currie, Robert Dewey, (2) *
• Maize, Earl R. (1)

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