Merits of different materials discussed in paper read at annual convention of Nat. Sand and Gravel Assn.; more exacting specifications for ballast; "Gable roof" form, wind ballast and effect of too light a coat of ballast.
Problems in railroad ballasting
Contract Rec
Contract Record and Engineering Review ; 41 , n 49
1927
2 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1900
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Engineering Index Backfile | 1901
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