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Description of typical mine-telephone systems and suggestions for making improved installations

A study of stray electric currents in airdox systems in coal mines

Published Year

• 1940-1949 (2) *

Subject

• Coal mines and mining--Electric equipment (1)
• Coal mines and mining--Equipment and supplies (1)
• Coal mines and mining--Safety measures (1)
• Compressed air (1)
• Mine safety (1)
• Telephone (1)

Author

• Brown, C. L. (2) *
• Gallagher, F. J. (1)
• Hyvarinen, John. (1)

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