Account of experience and practice of San Luis Mining Co of Tayoltita, Durango, Mexico, replacing pack mule transportation; first 100 mi trip of "caterpillar" 60 tractor from Dimas railroad station in Sinaloa to Tayoltita took 28 days, but in 3 trips tractor paid for itself in saving of freight costs; 95-hp Diesel tractor hauls twice load carried by first machine; tractor follows river bed instead of attempting to use tortuous mule trails. (See also Min and Contracting Rev v 39 n 29 July 20 1937 p 7)
Going through with tractors
Min J (Phoenix, Ariz)
Mining Journal (Phoenix, Arizona) ; 21 , n 9
1937
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1937
TIBKAT | 1967
|SLUB | 1975
|TIBKAT | 2004
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