, to the foot of at the summit of a grade. Every station will be begins to pass beneath the river, it will divide into Pineapple Street, Brooklyn. It will be about 2,500 served by a group of six elevators, each measuring 14 two single-track iron-tube tunnels, each 14 feet 6 inches feet in length… … Type of Station and Cross Section of Deep-level Tunnel. Oonstruction Beneath Atlantic Avenue, Brooklyn. Tunnel for Gas Mains Beneath Bast River. The Twin-tube Tunnel Beneath the Bast River. THE PEOPOSED TWIN TUNNEL BENEATH THE EAST EIVEE. extend beneath Maiden Lane and Cortlandt Street, two tubes…
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