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Breaking coal with airdox
Two devices to prevent electric arcs with airdox operations in coal mines
A study of stray electric currents in airdox systems in coal mines
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Published Year
1940-1949 (3) *
Subject
Coal mines and mining--Electric equipment (3)
Coal mines and mining--Equipment and supplies (3)
Coal mines and mining--Safety measures (3)
Compressed air (3) *
Author
Gallagher, F. J. (2)
Brown, C. L. (1)
Hyvarinen, John. (1)
Malesky, J. S. (1)
