Wooden trestle, concrete base, 96 ft. long, 2 per cent grade, constructed at cost of $750 to expedite unloading of coal, cinders, ballast, etc.
Unloading trestle speed material handling
Elec. Ry. Jl
Electric Railway Journal ; 73 , n 13
1929
1 Fig.
Aufsatz (Zeitschrift)
Englisch
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