High-carbon rails are used on tangent track, with manganese rail for parts of special work; most convenient length for handling found to be 33 ft.; accurate manufacture of screw spikes essential; 150-lb. section is used for third rail.
Track materials specially designed for New York City subways
Elec. Ry. Jl
Electric Railway Journal ; 73 , n 8
1929
4 pages
4 Figs.
Article (Journal)
English
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