Twin tubes 11,100 ft. and 12,800 ft. long proposed following Holland Tunnel design; bids would be asked on either shield or trench method.
Select site for vehicular tube under narrows at New York
Eng. News-Rec
Engineering News Record ; 102 , n 25
1929
3 pages
2 Figs.
Aufsatz (Zeitschrift)
Englisch
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