hiring of hemm for removal and transportation of 45 . 72 l cum ob hard ob 40 . 52 l . cum and soft ob 5 . 20 l . cum within the boundary of approved chitra east ocp of s . p mines area , item description/ heading , excavation and loading in all kinds of soil including mixed soil , mixed hard soil i . e . clay/ soil mixed with pebble . , moorum , hard moorum , soil mixed with laterite/stone boulders etc . ) at any depth by mechanical means including pumping out water & discharging the same to the nearest drainage system and removal of mud and slurry as required , transporting and unloading mechanically and disposed off by either ( a ) dumping outside the working zone in proper manner on the land arranged by the colliery or ( b ) directly back filling of the excavated area in proper layer or ( c ) filling of subsided area / voids in the adjoining area outside the working zone in operation or as per direction of colliery official in proper gradient including dozing , the job involves making access trench / haul road as required for excavation operation and for transportation of excavated materials etc . all complete as per direction of project officer/ agent . ( payment shall be made for finished work on the basis of pre-work and post-work level section measurement of excavation . measurement is to be certified by colliery surveyor , manager , project officer/ agent , joint check measurement on quarterly/half yearly basis shall be done as per bid document ) carriage lead 1-2 km . , excavation in benches in any kind of rock , soft or hard including drilling , using suitable blast hole drilling machine , charging and blasting ( blasting shall be done by deptt . free of cost . supply of explosives , detonators & related materials will be made available by ecl and the services of statutory supervisory personnel as required for the work will be provided as and when considered necessary by the management free of cost ) as required at any depth and loading by mechanical means including pumping out water & discharging the same to the nearest drainage system & removal of slushy earth and slurry as required , transporting and unloading mechanically and disposed off either by ( a ) dumping outside the working zone in proper manner on the land arranged by the colliery or ( b ) directly back filling of the excavated area in proper layer or ( c ) filling of subsided area / voids in the adjoining area outside the working zone in operation or as perdirection of colliery official in proper gradient including dozing , the job involves making access trench / haul road as required for excavation operation and for transportation of excavated materials etc . all complete as per direction of project officer/ agent . ( payment shall be made for finished work on the basis of pre-work and post-work level section measurement of excavation . measurement is to be certified by colliery surveyor , manager , project officer/ agent . joint check measurement on quarterly/half yearly basis shall be done as per bid document ) carriage lead 1-2 km . , total impact of gst for the purpose of ctc