hemm for removal of 1, 84, 561cum ob and extraction and transportation of 37, 16, 012 tes of coal for a period of three years in respect of kathara ocp of kathara area-2 hard ob:hiring of hemm for removal of ob for all kinds of strata requiring blasting including blast hole drilling & blasting , excavation of ob strata, loading & transportation ofexcavated 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 road as per instruction of the engineer-in-charge ( lead1-2 km ) 3 hiring of hemm for drilling, blasting, loading, transportation of coal from face to kathara washery, dozing face and coal dump and other specified places, grading and water sprinkling on haul road, preparation & maintenance of haul road & dewatering of working faces as per instruction of engineer in charge including weighment at both end. ( lead 4-5 km ) 4 hiring of hemm for drilling, blasting, loading, transportation of coal from face to swang washery, dozing face and coal dump and other specified places, grading and water sprinkling on haul road, preparation & maintenance of haul road & dewatering of working faces as per instruction of engineer in charge including weighment at both end. ( lead 14-15 km ) 5 hiring of hemm for drilling, blasting, loading, transportation of coal from face to swang washery, dozing face and coal dump and other specified places, grading and water sprinkling on haul road, preparation & maintenance of haul road & dewatering of working faces as per instruction of engineer in charge including weighment at both end. ( lead 15-16 km ) 6 hiring of hemm for drilling, blasting, loading, transportation of coal from face to jarangdih siding, dozing face and coal dump and other specified places, grading and water sprinkling on haul road, preparation & maintenance of haul road & dewatering of working faces as per instruction of engineer in charge including weighment at both end. ( lead 7-8 km ) 7 total impact of gst for the purpose of ctc