Tenders for Roof Bolting In Ug By Hiring Of Dgms Approved Portable Hydraulic Roof Bolting Machine With Wet Drilling Arrangement To Drill 1.50 Mtr/ 1.80 Mtr. Length Hole With 27Mm Dia Drill Bit For Anchoring 20/22Mm Dia Roof Bolts.. At Nowrozabad West Colliery
