With #Herrenknecht Mixshield Tunnel Boring Machine Kathleen, consortium of contractors, John Holland/CPB/Ghella has completed boring the first of two metro railway tunnels up to 40m deep under Sydney Harbour in an historic milestone for public transport in Sydney.
https://tunnellingjournal.com/tunnelling-history-made-sydney-harbour/
#Australia #GermanTBMs
Tunnelling contractor, John Holland/CPB/Ghella has completed boring the first of two metro railway tunnels up to 40m deep under Sydney Harbour in an historic milestone for public transport in Sydney. Herrenknecht Mixshield, Kathleen, which is being...
cover tunnel photo by: Matt Brown from London, England / CC BY
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