Impossible Engineering S7E2 - World's Toughest Tunnels (London's Super Sewer)
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A team of engineers are overhauling London's underground infrastructure to build a world-class sewer system. Using cutting-edge tech and the latest construction methods, they work to transform a centuries-old network into a modern-day masterpiece.
| Released | Apr 13, 2015 |
|---|---|
| Runtime | 42min |
| Genre | Documentary |
| Actor | Mike Bratton |
| Director | N/A |
| Production | Twofour |
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