Cost to railway company of bank-run gravel as compared to washed and crushed ballast; change in views of American Railway Engineering Assn. on washed ballast; amount of sand allowable or desirable in railway ballast. Abstract of address delivered before Nat. Sand and Gravel Assn. (see also Cement, Mill and Quarry, vol. 34, no. 3, Mar. 1929, pp. 50-51)
Use of gravel as railway ballast
Pit Quarry
Pit and Quarry ; 17 , n 8
1929
2 pages
Article (Journal)
English
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