Chennai Metro Rail phase 2 work: Tunnel boring machine Podhigai achieves breakthrough
by completing a tunnel in a 1.4km stretch under the Madhavaram High Road for phase two of Chennai Metro Rail. https://timesofindia.indiatimes.com/city/chennai/chennai-metro-rail-phase-2-work-tunnel-boring-machine-podhigai-achieves-breakthrough/articleshow/104920739.cmsReply on topic: HS2 celebrates historic first tunnelling breakthrough
https://mediacentre.hs2.org.uk/news/hs2-celebrates-historic-first-tunnelling-breakthroughReply on topic: Melbourne Water: Collette The TBM breakthrough at O’Shannassy Reservoir
https://utilitymagazine.com.au/tbm-collette-breakthrough-prepares-for-pipe-installation/Reply on topic: MMRC achieves 35th breakthrough. 91% of boring is completed
Krishna 1 breakthrough https://www.youtube.com/watch?v=b2VXFz-ZgpwReply on topic: TBM Joan breaks through at Parkville Station of Melbourne Metro Tunnel
https://metrotunnel.vic.gov.au/about-the-project/news/milestone-breakthrough-at-parkvilleReply on topic: Breakthrough story of India’s longest Railway Tunnel
https://www.dailyexcelsior.com/breakthrough-story-of-indias-longest-railway-tunnel/Reply on topic: Delhi Metro TBM DZ1123 Records Breakthrough at Kishangarh
https://www.metrorailnews.in/delhi-metro-tbm-dz1123-records-breakthrough-at-kishangarh/Reply on topic: Afcons Achieves Another Breakthrough with TBM Sudarshan 8.1 at Begumpul RRTS Station
https://www.metrorailnews.in/afcons-achieves-another-breakthrough-with-tbm-s88-at-begumpul-rrts-station/
cover tunnel photo by: Matt Brown from London, England / CC BY
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