construction of river protection from bongti bridge to the house of tulu ghosh ) , 2 ) construction of river protechtion near the house of shyamal roy to the house of gouranga sarkar supply of various item materials supply of various item materials , 0295-stone aggregate ( single size ) :20 mm nominal size , 0297-stone aggregate ( single size ) : 10 mm nominal size , 0367-portland cement , 2202-stone aggregate below 40 mm nominal size , 3-display board , mr4202-stone boulder ( 225 mm above ) , mr4203-stone boulder ( 225mm-150mm ) , mr4208-coarse sand , mr4223-loading unloading & stacking sand / stone aggregate ( less than 40mm nominal size ) , mr4224-loading unloading & stacking stone aggregate ( above 40mm nominal size ) , mr4234-sausage wire net , 7-worksite facilities / creche / drinking water / first aid , 5-gst