Ore.-Wash. R. R. and Navigation Co. solves problem of moving mountain side on Columbia River line, 42 mi. east of Portland, Ore.; in all 8 tunnels have been constructed with aggregate length, including laterals, of 4674 ft.; results of work are quite satisfactory. (See also Ry. Eng. and Maintenance, vol. 20, no. 12, Dec. 1924, pp. 476-479, 6 figs)
Drainage tunnels overcome great landslides
Ry. Age
Railway Age ; 77 , n 22
1924
4 pages
6 Figs.
Article (Journal)
English
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