supply of different for const . of gravel road form najimuddin miya house to mashan path at dinhata village-i gp within dinhata-i dev . block , 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 , empty gunny bag , bamboo ( 8cm-10 cm dia ) including fixing , nail , fine sand , work site favilities , display board , gst