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Zonal Maintenance For Arresting Seepage On Track Bed, Treatment Of Expansion/ Construction Joints Of Rts Box/ Elevated Structures/ Stations/ Ventilation Shaft, Box Walls, Floors, Mezzanine & Ceilings By Grouting With Cement Admixed With Non- Shrinkable Water Proofing Compound And With Cementicious Grout On Both Up & Dn Track Including Pit Lines And Ballastless Track From Km -6.37 Dakshineswar To Km 7/14 Central Including Noapara Car Depot Of Metro Railway, Kolkata.
