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Compressed air for operating modern coal-mining equipment
Permissible electrically operated air compressors
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Published Year
1930-1939 (2) *
Subject
Air-compressors (2) *
Mining machinery (1)
Author
Brunot, H. B. (1)
Currie, R. D. (1)
Gleim, E. J. (1)
Ilsley, L. C. (1)
