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Extras
Compressed air was used to keep the water out of the Pennsylvania RR's Manhattan tunnels.
Compressed Air in the Tunnels
Excavation workers, called “sandhogs,” faced many dangers working in a confined space.
Confined Labor in the Tunnels
Constructing Pennsylvania Station
Two city blocks, or 28 acres, were initially cleared for Penn Station’s construction.
Constructing Pennsylvania Station
The Destruction of Penn Station
In 1961 the Pennsylvania Railroad announced it had sold the air rights above Penn Station.
The Destruction of Penn Station
Measurements showed that the Pennsylvania RR Hudson River tunnels were shifting.
Hudson River Tunnel Shifting
Inside the MTA's East Side Access Project
An exclusive look at New York MTA's subterranean East Side Access project.
Inside the MTA's East Side Access Project
Mapping Engineering in America
Map history with us! See how engineering has changed America with our new map!
Mapping Engineering in America
Behind the scenes at the country's busiest transportation hub - NYC's Penn Station.
Penn Station Central Control
Preliminary Worries with the Pennsylvania Railroad Tunnels
The Pennsylvania Railroad announced they would be tunneling into Manhattan.
Preliminary Worries with the Pennsylvania Railroad Tunnels
The Rise and Fall of Penn Station, Chapter 1
The engineering feat and architectural achievement that was torn down after just 53 years.
The Rise and Fall of Penn Station, Chapter 1
The Rise and Fall of Penn Station Preview
The engineering feat would last, the architectural masterpiece did not. Premiering Feb 18.
The Rise and Fall of Penn Station Preview
Tunneling under the Hudson river proved easy, but the East River was becoming a nightmare.
Tunneling the East River
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