Underground railroad owned and operated by Chicago Tunnel Co. and Chicago Warehouse and Terminal Co.; train movements controlled by dispatcher; 62 miles of tunnels and connections, all equipped with 2 ft. gage track and overhead trolley wires for use of electric locomotives; tubes are 6 ft. wide inside and 7 1/2 ft. high and are shaped like horse-shoe; walls are faced with concrete a foot thick.
Chicago. Chicago freight speeded up by underground railroad
Ry. Age
Railway Age ; 86 , n 4
1929
3 pages
4 Figs.
Aufsatz (Zeitschrift)
Englisch
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Underground freight railways of Chicago
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