Underground transportation at Kanawha field, W Va; developed locally for low-vein application, Kanawha-type shuttle cars powered by small electric motors boost output at truck mines, in outcrop recovery and as gatherers in rail shipping conveyor mine; inverted trolley wires power supply cars; 50 dropbottom units in operation.
Dropbottom cars from autos serve Kanawha mines
Coal Age
Coal Age ; 58 , n 7
1953
4 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1953
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SLUB | 2000
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Online Contents | 1998