Elimination of plant of Chicago Rock Island and Pacific Ry. saves $5000 per year at crossing.
Automatic interlockings show economy
Ry. Rev
Railway Review ; 79 , n 24
1926
2 pages
4 Figs.
Aufsatz (Zeitschrift)
Englisch
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Automatic interlockings on frisco
Engineering Index Backfile | 1937
Engineering Index Backfile | 1933
Rock island installs several automatic interlockings
Engineering Index Backfile | 1927
|Automatic interlockings on the G. N.
Engineering Index Backfile | 1924
Engineering Index Backfile | 1954