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Gus Scott, Project Manager for Crossrails Thames Tunnel, said: Its great to know that were half way through our tunnelling in southeast London. Mary and Sophia have done a fantastic job so far,
between them constructing a mile and a half of brand new tunnels from Plumstead to Woolwich. Sophia and Mary are constructing the Thames tunnel, which will run from Plumstead, via Woolwich and
underneath the Thames to North Woolwich. They are different to the tunnelling machines being used elsewhere on Crossrail. Known as slurry machines, they are specially equipped to deal with the
chalk, flint and wet ground conditions in southeast London. As part of the tunnelling process, the excavated soils are pumped out as liquid slurry to a special site treatment plant at Plumstead.
The slurry is separated into sand, gravel, water and chalk. The chalk comes out in cakes or slabs of filtered chalk particles. Ends For further information contact the Crossrail Press Office on
020 3229 9552 or email email@example.com About Crossrail: The total funding envelope available to deliver Crossrail is 14.8bn. The Crossrail route will pass through 38 stations and run
more than 100km from Maidenhead and Heathrow in the west, through new twin-bore 21 km (13 miles) tunnels below central London to Shenfield and Abbey Wood in the east. When Crossrail opens it will
increase London's rail-based transport network capacity by 10%, supporting regeneration and cutting journey times across the city. Crossrail services are due to commence through central London in
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