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 Am. Ry. Eng. Assn. -- Bul vol. 31, no. 318, Aug. 1929 pp. 19-28, 3 figs)
Railroad improvements of two decades
Eng. News-Rec.
Engineering News Record ; 103 , n 2
1929
Article (Journal)
English
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Railroad improvements of two decades
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