hiring of hemm for removal of 380 . 449 lakh cum ob ( including inter burden ) from part-i of block-ii ( east ) of rajrappa ocp of rajrappa area for a period of 04 years . , item description/ heading , hiring of hemm for removal of ob ( including inter burden ) of from part-i of block-ii ( east ) of rajrappa ocp ( consisting of top soil , alluvium soil , blast rock etc . ) , including blast hole drilling & blasting 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 road & dewatering of working faces , water sprinkling on haul road as per instruction of the engineer-in-charge ( lead 3-4 km ) . , hiring of hemm for removal of ob ( including inter burden ) of from part-i of block-ii ( east ) of rajrappa ocp ( consisting of top soil , alluvium soil , blast rock etc . ) , including blast hole drilling & blasting 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 road & dewatering of working faces , water sprinkling on haul road as per instruction of the engineer-in-charge ( lead 4-5 km ) . , hiring of hemm for removal of ob ( including inter burden ) of 5-6 km lead from part-i of block-ii ( east ) of rajrappa ocp ( consisting of top soil , alluvium soil , blast rock etc . ) , including blast hole drilling & blasting 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 road & dewatering of working faces , water sprinkling on haul road as per instruction of the engineer-in-charge ( lead 5-6 km ) . , total impact of gst for the purpose of ctc