Tunnel recently completed under the east River, at New York City. Longitudinal section. Cast iron lining. Long Island City entrance. Iron lined section, showing Beach shield in operation. Drilling shot holes around an air lock. Blackwell's Island.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner

Created on

Monday 16 November 2009

Posted on

Monday 16 November 2009

Tags

air, construction, sandhogs, transportation, underground, underwater, utilities, water

Albums

• General Magazines / Science and Technology Magazines / Scientific American

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1674

Description

Tunnel recently completed under the east River, at New York City. Longitudinal section. Cast iron lining. Long Island City entrance. Iron lined section, showing Beach shield in operation. Drilling shot holes around an air lock. Blackwell's Island.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner