Mumbai: The National High Speed Rail Corporation Limited (NHSRCL) has said that it has lowered the cutterhead of the second Tunnel Boring Machine (TBM) for the tunnel section of the Mumbai-Ahmedabad bullet train project in Navi Mumbai, officials said on Sunday.
The 13.6 diameter cutterhead, weighing 350 tonnes, was lowered at Sawli near Ghansoli on Saturday, marking the final step in the primary assembly of the TBM's main shield, the NHSRCL stated in a release.