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CQ039_09-20-12_Hole Thru CQ026 Slurry Wall in Drift 1 & Drift 3 %281%29 (1)

On Sept. 20, 2012, sandhogs working on the East Side Access project broke through the last piece of wall separating the Manhattan tunnel from the Queens tunnel, thereby taking a big step toward a contiguous tunnel more than 3.5 miles long from Sunnyside Yard in Queens to 37th Street and Park Avenue in Manhattan

 

This shows the cavern before the hole-through was formed.

 

Photo: Metropolitan Transportation Authority / Nichole Guernsey

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Taken on September 20, 2012