Features of signals and signaling system employed between Sault Ste. Marie, Ont., and Sault Ste. Marie, Mich.; two-lever table interlocking machine controls bridges.
Canadian pacific utilizes modern interlocking to protect movable bridge
Ry. Signaling
Railway Signaling ; 24 , n 1
1931
2 pages
7 Figs.
Article (Journal)
English
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