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The Sydney Metro has reached a major milestone, with all tunnelling now finished on the Sydney metro City & Southwest project.

Tunnel Boring Machine (TBM) Nancy has arrived at the new Martin Place Station, marking another major milestone for Sydney Metro.

Sydney Metro’s Tunnel Boring Machine (TBM) Kathleen has begun tunnelling for the historic first rail crossing deep under Sydney Harbour.

Tunnel boring machine (TBM) Kathleen arrived north of the harbour on March 18, breaking through a wall of sandstone.

Sydney Metro TBM breaks cover

Posted in New South Wales Rail News on 2015-08-27 08:04:26

Tunnel boring machines typically arrive ‘face first’ at a breakthrough sites, but TBMs Maria andIsabelle which are being used on the Sydney Metro Northwest project passed through a future ventilation and emergency access shaft at Cheltenham with the top 3 m of their cutter heads above ground.

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