supply of different materials for construction of gravelled road form bettala kallir path to ukil barman house under matalhat g . p . within dinatha-i p . s . aap no . 080512160210 , stone aggregate below 40 mm nominal size , loading unloading & stacking sand / stone aggregate less than 40 mm nominal size ) , river bed metal , stone aggregate ( single size ) : 63 mm nominal size , stone aggregate 40 mm nominal size and above , loading unloading & stacking stone aggregate ( above than 40 mm nominal size ) , stone screeint type a ( 13 . 2mm ) , higher charges of diesel road roller 8 to 10 tones , r . c . c . pipes np2 class 450 mm dis , work site favilities , display board , gst