Johnstown Coal and Coke Co has used surge cars, track-mounted " shuttle" cars, in development of entries in Portage No. 2 mine in combination with track mounted cutting and transportation equipment, crawler mounted loaders and portable drills; 12- and 6-man crews have been used to gain productivity rate as high as 28 tons per shift for each crew member; use of prefabricated track sections recommended.
Track-mounted surge cars speed entry development
Mechanization
Mechanization ; 16 , n 6
1952
3 pages
Article (Journal)
English
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History, development and application of track motor cars
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