Chesapeake and Ohio moves 700,000 cu. yd. of material to reduce maintenance expenses; excavation work which demolished tunnel and substituted deep open cut. See Engineering Index 1929, p. 1511.
Daylighting a 1400-ft. tunnel
Ry. Age
Railway Age ; 89 , n 2
1930
2 pages
1 Fig.
Article (Journal)
English
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Review of Advanced Daylighting Systems
Tema Archive | 2013
|DataCite | 1872
GWLB - Gottfried Wilhelm Leibniz Bibliothek | 1855
GWLB - Gottfried Wilhelm Leibniz Bibliothek | 1855
GWLB - Gottfried Wilhelm Leibniz Bibliothek | 1855