tunnelling breakthrough

TBM ‘Pelican’ Achieves Breakthrough, Completes Longest Twin Tunnel Drive In Chennai Metro Phase II

Arjun Brij
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Delhi-Ghaziabad-Meerut RRTS: Tunnelling In Underground Section Of Meerut Completed

Arun Kumar Das
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Delhi-Ghaziabad-Meerut RRTS: Breakthrough Achieved On Fifth Tunnel Of Corridor

Arun Kumar Das
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