Sydney Harbour TBM "Kathleen" ready to launch.
975 tonne mixed shield slurry Herrenknecht TBM will join the four other Herrenknecht TBMs currently digging.
https://tunnellingjournal.com/sydney-harbour-tbm-ready-launch/
cover tunnel photo by: Matt Brown from London, England / CC BY
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5 TBMs deliver twin 15.5km rail tunnels for Australia’s biggest public transport project.