The Mumbai Metro Rail Corporation (MMRC) achieved its 41st breakthrough at Mumbai Central Metro Station on the Colaba-Bandra-SEEPZ Metro-3 corridor, after the tunnel boring machine (TBM) Tansa-2 completed its final downline, informed the officials on Tuesday.

Robbins made TBM Tansa-2 completed its downline drive of 832.5 meters from Mahalaxmi Metro Station to Mumbai Central Metro Station in 262 days using 555 concrete rings.