procurement of 1st class category stone aggregate ( normal size-20mm / 12.5 mm ) for construction work against various scheme within bishalgarh, charilam and jampuijala r.d block under r. dbishramganj division. , any worksites within bishalgarh block area. 1st category stone aggregate ( 20 mm nominal size ) , any worksites within bishalgarh block area. 1st category stone aggregate ( 12.5 mm nominal size ) , any worksites within, charilam block area.1st category stone aggregate ( 20 mm nominal size ) , any worksites within, charilam block area.1st category stone aggregate ( 12.5 mm nominal size ) , any worksites withinjampuijala block area. 1st category stone aggregate ( 20 mm nominal size ) , any worksites withinjampuijala block area. 1st category stone aggregate ( 12.5 mm nominal size )