Details of 32-lever all relay electric interlocking installed at Pacific Junction, by Chicago, Milwaukee, St Paul and Pacific Railroad, to replace 116-lever mechanical plant installed more than 40 yr ago.
Milwaukee replaces mechanical plant with all relay electric interlocking
Ry Signaling
Railway Signaling ; 35 , n 12
1942
6 pages
Aufsatz (Zeitschrift)
Englisch
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