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Pumping operations in the Cripple Creek district, Colo.
Permissible electrically operated pumps
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Published Year
1930-1939 (1)
1940-1949 (1)
Subject
Mine pumps (2) *
Coal-mining machinery--Electric equipment (1)
Coal-mining machinery--Safety measures (1)
Coal-mining machinery--Testing (1)
Gold mines and mining--Colorado--Cripple Creek Region (1)
Author
Brunot, H. B. (1)
Gleim, E. J. (1)
Guiteras, Joseph R. (1)
Ilsley, L. C. (1)