Gives itemized costs of the work. (2000 w.) (No. 93578)
The cost of driving an earth tunnel for a railroad
Engng-Con
1908
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
Electricity driving longest railroad tunnel in United States
Engineering Index Backfile | 1925
|Driving the big savage railroad tunnel with compressed air
Engineering Index Backfile | 1911
Driving the new kingswood railroad tunnel at the allegheny summit
Engineering Index Backfile | 1912
|Engineering Index Backfile | 1945
|Tieless railroad track in tunnel of Hamburg's underground railroad
Engineering Index Backfile | 1963
|