Link to BBC web site |
"Tunnelling work is about to begin on a grand scale in London as the £16bn Crossrail project gets set to build 26 miles (42km) of tunnels beneath the capital.
"Described by Boris Johnson as 'voracious worms nibbling their way under
London', the 150-metre long machines will take three years to build a
network of tunnels beneath the city's streets."
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