Dirty Great Machines - Tunnel Boring Machines | Technology Documentary | Reel Truth. Science

39 million tonnes of raw sewage floods through London's rivers every year causing a huge stink in the city. The Victorian sewer system can't cope with volumes and a new super sewer must be built. To do this, a tunnel boring machine must be brought in to excavate underground. Welcome to Reel Truth. Science the home of inspiring documentaries from the scientific and medical world. Here you can find full length documentaries to discover and explore.

Courtesy of Banijay Science on YouTube. Watch on YouTube ↗

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