Signal arrangement and controls installed at Duluth, Minn, by Duluth, Missabe and Iron Range to handle incoming hill transfer trains and switching moves required to push cars out into elevated docks.
New interlocking on leads to docks saves time for ore trains
Ry Signaling Communications
Railway Signaling and Communications ; 47 , n 2
1954
4 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1957
Engineering Index Backfile | 1954
Simple interlocking saves many train stops
Engineering Index Backfile | 1951
Remote control for interlocking saves $6000 annually
Engineering Index Backfile | 1931
Automatic interlocking saves 50 stops a day
Engineering Index Backfile | 1928