Development of track laying shuttle car in No. 21 mine of Jamison Coal and Coke Co, near Latrobe, Pa; underground conditions are complicated by bad roof and water; problems encountered by development of continuous mining; characteristics of haulage equipment.
Shuttle car haulage in difficult conditions
Min Congress J
Mining Congress Journal ; 39 , n 8
1953
3 pages
Aufsatz (Zeitschrift)
Englisch
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