Building the London Underground: London Underground Revealed

Building the London Underground: London Underground Revealed

Series 3

Today 8pm - 9pm National Geographic Channel
HD WIDE SUR
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Summary

An exploration of London's Underground, the biggest metro system in the Western world, and the technological advances that made it possible, including the invention of easy tunnelling, the propulsion required to power the trains, the creation of subterranean stations and special fire-safety systems.
Documentary Education