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Comparison of storage-battery and cable-reel gathering locomotives in a West Virginia coal mine
Methods of development and pillar extraction in mining the Pittsburgh coal bed in Pennsylvania, West Virginia, and Ohio
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Published Year
1930-1939 (2) *
Subject
Coal mines and mining--West Virginia (2) *
Coal mines and mining--Ohio (1)
Coal mines and mining--Pennsylvania (1)
Coal--Transportation (1)
Locomotives (1)
Mining engineering (1)
Author
Owings, C. W. (1)
Paul, J. W. (1)
Plein, Leopold Nicholas, (1)
