The Tunnel Boring Machine (TBM) named Nilgiri (S-96) in corridor 3 of phase 2 metro rail construction had a breakthrough at Madhavaram High Road on Monday.
The Nilgiri drive started in October last year after its inauguration by Chief Minister MK Stalin from Madhavaram Milk Colony Station to Madhavaram High Road.
cover tunnel photo by: Matt Brown from London, England / CC BY
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