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The crew working on a Manhattan subway line extension encounters problems as they prepare the final few blasts to complete a giant cavern; the West Tunnel mole gang keeps running into obstacles while trying to mine 25 feet a day.

Sandhogs

A Band of Brothers

After 38 years of work, a Manhattan water tunnel said to be the largest public works construction project in the history of the Western Hemisphere nears completion; the subway expansion reaches a milestone; blasting problems.

The End of an Era

Morale sinks to an all-time low as the tunnel-boring machine cuts through Croton's upper tunnel; Temporary Foreman Anthony Aviles' aggressive leadership style forces Walking Boss Morgan Curran to monitor the worrisome situation closely.

It Is What It Is

The crew prepares for the project's next step of permanently joining two tunnels; the newly appointed foreman pushes his mole crew too hard; a solo blast in Manhattan.

Leaders Among Hogs

Sandhogs conduct test blasts as construction of the first new subway tunnel expansion in 20 years begins; a foreman loses fingers in an accident.

Punching Through

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