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Some phases of coal-mine ventilation

Mine-fan signal alarms and power releases

Published Year

• 1920-1929 (1)
• 1940-1949 (1)

Subject

• Mine ventilation--Equipment and supplies--Safety measures (2) *

Author

• Ankeny, M. J. (1)
• Fene, W. J. (1)
• Forbes, John J. V. (1)
• Weaver, H. F. (1)

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