Rehabilitation Of 6 Vent Sluice Over Kheyada Khal Consisting Of 6 Nos Vertical Draw Shutter And 6 Nos Flap Shutter With New Hoisting Arrangement Including Winch System At Kheyada Khal Bidhannagar, Dist North 24 Parganas. Wbiw/Ee/Med/E-Nit-23/2025-26 Sl 1