Large operating economies effected in period 1907 to 1927 by grade reduction, realignment, double tracking, signals and heavier engines in spite of decreased rates; results on Rock Island are typical of what may be accomplished. (see also Eng. News-Rec., vol. 102, no. 22, May 30, 1929, pp. 864-868, 3 figs. and correction of error in vol. 103, no. 2, July 11, 1929, p. 51)
Railroad improvements of two decades
Am. Ry. Eng. Assn. -- Bul
American Railway Engineering Association -- Bulletin ; 31 , n 318
1929
10 pages
3 Figs.
Article (Journal)
English
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Railroad improvements of two decades
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