Adaptability of trolley locomotives to varying underground haulage requirements; discussion of characteristic curve for d.c. motor used in ordinary mine locomotives; typical haulage examples; tractive effort; motor heating; altitude and ambient temperature effect; method of calculation and choice of mine locomotive.
The choice of suitable electric trolley locomotives for metal mine haulage
Eng. Min. Jl
Engineering and Mining Journal ; 128 , n 26
1929
6 pages
4 Figs.
Article (Journal)
English
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