Herrenknecht Earth Pressure Balance TBM S1075B with a bore diameter of 6.670 meters passes the factory acceptance test inTiruvallur in the presence of Chennai Metro Rail Limited (CMRL) officials.
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cover tunnel photo by: Matt Brown from London, England / CC BY
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Chennai Metro Reaches Milestone: Second Tunnel Boring Machine Test Successful for Corridor 4
www.livechennai.comChennai Metro Reaches Milestone: Second Tunnel Boring Machine Test Successful for Corridor 4