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Ventilation of manholes.

Some of the hazards of auxiliary fans in coal mines

Published Year

• 1930-1939 (1)
• 1940-1949 (1)

Subject

• Ventilation (2) *
• Air (1)
• Fans (Machinery) (1)
• Manholes (1)
• Mine explosions (1)
• Mine safety--United States (1)
• Mines and mineral resources--United States--Safety measures (1)

Author

• Baker, E. S. (1)
• Campbell, John, (1)
• Harrington, D. (1)
• Jones, G. W. (1)
• Warncke, R. G. (1)

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