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SUBTERRANEAN NEWS

Construction of one of the world's largest underground laboratories at the CERN centre for nuclear research in Geneva has hit a milestone with completion of a massive 5m thick, 85m long and 30m wide reinforced concrete floor slab. The slab forms the base of a giant 34m high cavern, 100m below ground. It will house highly sensitive monitoring equipment as part of a US$11bn upgrade of CERN's 26.7km long particle accelerator. Super-cooled magnets operating at close to absolute zero (-273infinityC)

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