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Pumping operations in the Cripple Creek district, Colo.

Permissible electrically operated pumps

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)

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