"My job is to make sure we've got the right instruments, and we're all on the same page of the same music at the right tempo, so that when it comes together it sounds like music rather than noise," he says. Tucker is coordinating a complex section of the route that includes Liverpool Street, Whitechapel and Canary Wharf stations and all the tunnelling from Farringdon to Pudding Mill Lane and Royal Victoria Dock. His remit encompasses spray concrete lined (SCL) tunnels, four tunnel boring machines (TBMs) excavating six drives, and a series of massive intervention and evacuation shafts.
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