CMRL begins tunnelling work from Perambur Barracks to Pattalam for Phase 2 Metro Rail project
Officials are expecting the tunnel boring machine to work through clayey soil and weathered rock in the Perambur Barracks Road-Pattalam stretch. (File photo) | Photo Credit: SRINATH M Chennai Metro Rail has begun tunnelling work to connect Perambur Barracks Road and Pattalam through an underground network as part of the 118.9 km Phase II project….