Anaconda Copper Mining Co. operates 185 trolley-type locomotives, each of which replaced five animals, and 22 storage-battery locomotives, hauling average of 245 loaded cars and returning same number of empties in 16-hr, day. Cost comparison of the two types. (Abstract) (See also Am. Inst. Min. and Met. Engrs. Trans no. 1123-M Feb. 1922 7 pp., 4 figs.)
Electric haulage systems in Butte mines
Min. Metallurgy
Mining and Metallugy ; n 182
1922
Aufsatz (Zeitschrift)
Englisch
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Some notes on electric haulage for mines
Engineering Index Backfile | 1902
Rail haulage systems in underground mines
Tema Archiv | 1979
|Engineering Index Backfile | 1921
|Engineering Index Backfile | 1956
|Haulage units keep mines on pace
Tema Archiv | 1989
|