A brief description of the methods employed in driving the tunnels and the working plant of the contractors. (Serial. 1st part) (7000 w.) (No. 77813)
The Pennsylvania tunnels under the East river
R R Gaz
1906
Ills.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
The east river tunnels of the Pennsylvania railroad
Engineering Index Backfile | 1908
The Pennsylvania tunnels under the North River
Engineering Index Backfile | 1906
Air compressor plant for east river tunnels of the Pennsylvania railway
Engineering Index Backfile | 1908
|The meeting of the four east river tunnels of the Pennsylvania railroad
Engineering Index Backfile | 1908
The air power plants of the East river tunnels of the Pennsylvania railroad
Engineering Index Backfile | 1906