Crossrail contract Crossrail contract C300 Western Running Tunnels (Royal Oak to Farringdon) Crossrail’s Western Tunnels Contract is one of the largest of the Crossrail contracts. At peak production the TBMs can each advance up to 40 metres in a day excavating in excess of 3,000 tonnes and installing 575 tonnes of concrete tunnel lining rings. The western tunnels (C300/410) work comprises two 6.2m internal diameter bored tunnels, each 6.5km long

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