hiring of hemm for overburden ( ob ) removal , coal extraction and transportation at ashok ocp , piparwar area for a period of 40 days . , hiring of hemm for removal of ob for all kind of soil/rocks ( consisting of top soil , alluvium soil , blasted rocks etc ) including blasted hole drilling & blasting upto floor of lower bisrampur coal seam as per requirement , excavation of ob strata , loading and transportation of excavated ob , dumping in dump yard , dozing , grading , leveling at dump sites including face & other specified places , preparation & maintenance of haul roads & dewatering of working faces , water sprinkling on haul roads as per instruction engineer in charge of ashok ocp . , hiring of hemm for drilling , blasting , loading , transportation of coal from face to proposed pit head stock , dozing at face and coal dump and other specified places , grading and water sprinkling on haul road , preparation and maintenance of haul road & dewatering of working faces as per instruction engineer in charge of ashok ocp without weighment at both end . , total impact of gst for the purpose of ctc