tender for procurement of 1st class category stone aggregate (normal size 20mm/ 12.5 mm) for construction work against various scheme within bishalgarh, charilam & j uijala r.d block under r. d bishramganj division. (2nd call) , 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 within jampuijala block area. 1st category stone aggregate (20 mm nominal size) , any worksites within jampuijala block area. 1st category stone aggregate (12.5 mm nominal size)