In Treasury Tunnel of Idarado Mining Co, located at Ouray, Colo, elevation 10,600 ft, Diesel locomotives have been used on main line underground haulage for more than one year with gratifying results; elimination of exhaust hazards by use of gas conditioner.
Diesel locomotive for underground haulage
Mining Congress J
Mining Congress Journal ; 32 , n 12
1946
1 pages
Aufsatz (Zeitschrift)
Englisch
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