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Permissible electrically operated pumps

List of permissible mine equipment approved to January 1, 1940

Permissible blasting units

Detailed study of 60-day nonfatal underground accidents in Pennsylvania bituminous coal mines during 1939

A quarter century of mechanized mining:notes on permissibility

List of permissible mine equipment approved to January 1, 1942

Permissible methane detectors

Investigations of Permissible Electric Mine Lamps, 1930-40

Published Year

• 1940-1949 (8) *

Subject

• Coal mines and mining--Safety measures (2)
• Explosives (2)
• Blasting (1)
• Coal-mining machinery--Electric equipment (1)
• Coal-mining machinery--Safety measures (1)
• Coal-mining machinery--Testing (1)
• Gas detectors (1)
• Methane (1)
• Mine accidents--Pennsylvania (1)
• Mine pumps (1)
• Mine safety--Pennsylvania (1)
• Mines and mineral resources (1)

Author

• Ilsley, L. C. (8) *
• Hooker, A. B. (3)
• Brunot, H. B. (1)
• Gleim, E. J. (1)

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