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Shieldhall tunnelling machine rolls off the production line

Scottish Water has announced that the 1,000t tunnel boring machine (TBM) that will be used to bore the 5km Shieldhall Tunnel in Glasgow has completed factory testing in Germany.

The Herrenknecht TBM was demonstrated in the factory to a delegation from Scottish Water and will now be dismantled for transport to the site in Germany where it is expected to arrive in spring 2016.

The 180m long TBM will be launched by joint venture contractors Costain and Vinci Construction Grands Projets from a chamber at the western end of the tunnel and will bore eastwards. The tunnel is expected to be completed by the end of 2017.



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