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"Muditing" in coal mines

What is the responsibility of the coal-mine official in the present change to and future of mechanizes mining?

Published Year

• 1920-1929 (1)
• 1930-1939 (1)

Subject

• Coal mines and mining (2) *
• Mine safety (1)
• Mudite (1)

Author

• Harrington, D. (2) *
• Cash, F. E. (1)

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