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TWIN TUNNELS

Channel Tunnel Rail Link (CTRL) contractors were this week continuing preparations to dig a 600m new twin bore tunnel in central London that will eventually carry Thameslink trains north of King's Cross. Main contractor Kier/Edmund Nuttall has already built the tunnel boring machine (TBM) launch pit on the King's Cross railway lands as part of Contract 103. Tunnelling will start this summer with a TBM working from the launch pit to the site of a new Thameslink station beneath St Pancras. ...

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