Design features of car adopted at mine of Allegheny-Pittsburgh Coal Co in Allegheny County, Pa; 300 of these 8-ton capacity cars replace more than 500 cars of 3 1/2-ton capacity; notes on other equipment and mining practice.
Eight-wheeled cars installed at springdale
Mechanization
Mechanization ; 10 , n 3
1946
5 pages
Aufsatz (Zeitschrift)
Englisch
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