A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seven-drill "Jumbos" make short work of west rock highway tunnel
Twin bore tunnels, each 26 1/2 ft wide, 1200 ft long, holed through on Wilbur Cross Parkway near New Haven, Conn; 23-ft roadway emergency sidewalks built out 2 1/2-ft from side wall; two 7-drill jumbo drills mounted on two Linn "half-tracks" were used.
Seven-drill "Jumbos" make short work of west rock highway tunnel
Twin bore tunnels, each 26 1/2 ft wide, 1200 ft long, holed through on Wilbur Cross Parkway near New Haven, Conn; 23-ft roadway emergency sidewalks built out 2 1/2-ft from side wall; two 7-drill jumbo drills mounted on two Linn "half-tracks" were used.
Seven-drill "Jumbos" make short work of west rock highway tunnel
Roads Streets
Nettleton, E.T. (author) / Maynard, W.C. (author)
Roads and Streets ; 92
1949
3 pages
Article (Journal)
English
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