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Some studies on emergency mine communications
Protection against lightning at surface and underground mining plants
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Published Year
1940-1949 (2) *
Subject
Lightning protection (1)
Mine communication systems (1)
Mine safety (1)
Mine safety--Equipment and supplies (1)
Radio in mining (1)
Author
Harrison, L. H. (2) *
Coggeshall, E. J. (1)
Felegy, E. W. (1)
Harrington, D. (1)
Parker, D. J. (1)
