Making new UG drain along 30L from 5ED to 2WD and along 2WD from 30L to 40L to divert rise side seepage water to main water body at dip side 3WD 41L in Chora RVI seam of Chora 7 and 9 pit colliery for monsoon preparation 2026 27 under Kenda Area ECL Making new UG drain along 30L from 5ED to 2WD and along 2WD from 30L to 40L to divert rise side seepage water to main water body at dip side 3WD 41L in Chora RVI seam of Chora 7 and 9 pit colliery for monsoon preparation 2026 27 under Kenda Area ECL