02:36
Tunnel
10:04
#TBM Lowering in shaft by crane #tunnelboringmachine #tunnel #tbm #launching
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RRTS TBM breakthrough
01:16
Sandvik Boomer Pipe roofing Work in NATM Tunnel
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TBM lowering by Mega Lift Strand Jack System
01:28
Patna Metro - Tunnel work inauguration by CM Nitish Kumar and DCM Tejaswi Yadav
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