construction of fifty nine ctn of gravel road from tribeny ghat to culvert under barasoulmari gp within mathabhanga ii p s dist cooch behar const of fifty nine ctn of gravel road from tribeny ghatto culvertunder barasoulmari gp within mathabhangaii p s dist cooch behar , stone aggregate below 40 mm nominal size , loading unloading & stacking sand / stone aggregate ( less than 40mm nominal size ) , river bed material , stone aggregate ( single size ) :63 mm nominal size , stone aggregate 40 mm nominal size and above , loading unloading & stacking stone aggregate ( above 40mm nominal size ) , stone screening type a ( 13 . 2 mm ) , hire charges of diesel road roller- 8 to 10 tonne , display board , gst