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Breaking coal with airdox

Two devices to prevent electric arcs with airdox operations in coal mines

Published Year

• 1940-1949 (2) *

Subject

• Coal mines and mining--Electric equipment (2)
• Coal mines and mining--Equipment and supplies (2)
• Coal mines and mining--Safety measures (2)
• Compressed air (2) *

Author

• Gallagher, F. J. (1)
• Malesky, J. S. (1)

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