An RAF Chinook helicopter hovers over the slipped pieces of concrete, delicately dropping sandbags into a neat pile across the damaged spillway of the 100-plus year old dam holding back the Toddbrook Reservoir. Behind the damaged wall waits 1.3 million tonnes of water, ready to crash into the town of Whaley Bridge below. About 85 per cent of the residents of the Derbyshire town’s 6,500 residents...
The tricky physics behind saving the Whaley Bridge dam, explained
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