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Mine rescue life-line telephone assemblies

Control of roof and prevention of accidents from falls of rock and coal

Published Year

• 1940-1949 (2) *

Subject

• Coal mines and mining--Safety measures (1)
• Mine rescue work (1)
• Mine roof control (1)
• Mine safety--Equipment and supplies (1)

Author

• Forbes, J. J. (2) *
• Cash, F. E. (1)
• Griffith, F. E. (1)
• Petersen, Max S. (1)
• Sloman, Harold J. (1)

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