Sinking of 04 (Four) nos. Ground bored 250mm x 150mm dia., 360 mtr. deep Tubewell having 66 mtr. housing by Rotary method for Purbo Gabberia (Zone-II) PWSS (SM/11276) and Mastikari PWSS (SM/11779) of Joynagar-I Block under South 24-Parganas W/S Divn
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