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How a shipworm bankrupted Marc Brunel, nearly killed his son, and ended up helping to build the Channel Tunnel.
TalkHistoryScience & nature
The second of three talks on crossing the Thames, and the hardest of the three ways: going under it. The Thames Tunnel took eighteen years, flooded repeatedly and killed men, and the shield that finally got it through was patented from the way a shipworm bores through timber. 12:30, £10.
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