Title
Subway Tunnel
Subject
Subways--Design and construction
Subway tunnels
Illinois--Chicago
Central business districts
Illinois--Chicago--State Street
Description
Tracks and piping run through a tunnel section of the Chicago subway system, or "L".
On verso: "Finished section of shield driven tube in downtown State Street. The fluid nature of the sail in the central business district compelled the use of the shield method of mining."
On verso: "Finished section of shield driven tube in downtown State Street. The fluid nature of the sail in the central business district compelled the use of the shield method of mining."
Publisher
Abraham Lincoln Presidential Library and Museum
Date
n.d.
Format
jpg
Language
eng
Identifier
401277
Federal Writers Project
Original Format
commercial print
b&w
82
21 x 26 cm