
7.5
How Do They Do It?
2006
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Season 7 · Episode 3 — The ChunnelThe challenge of linking Britain and France with a tunnel under the English Channel was both monumental and delicate. It took 18 months just to design and build the 28 foot diameter TBMs, and nearly a year to assemble and position them underground. Modern Marvels takes you through the entire process from start to finish.
Up nextSpace Stations.S7 · E4 · 44 min
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