procurement of 1st category stone aggregate for smc, bmc and all blocks under the jurisdiction of rd santirbazar division procurement of 1st category stone aggregate for smc, bmc and all blocks under the jurisdiction of rd santirbazar division , 1st category graded stone aggregate of size in between 12.5 mm to 20 mm nominal size ( >12.5 mmto < 20 mm ) for concrete work. percentage of different sizes will be as per standard specification of concrete work.----bokafa rd block & santirbazar municipal council area , 1st category graded stone aggregate of size in between 12.5 mm to 20 mm nominal size ( >12.5 mmto < 20 mm ) for concrete work. percentage of different sizes will be as per standard specification of concrete work.----jolaibari rd block area , 1st category graded stone aggregate of size in between 12.5 mm to 20 mm nominal size ( >12.5 mmto < 20 mm ) for concrete work. percentage of different sizes will be as per standard specification of concrete work.----rajnagar rd block area , 1st category graded stone aggregate of size in between 12.5 mm to 20 mm nominal size ( >12.5 mmto < 20 mm ) for concrete work. percentage of different sizes will be as per standard specification of concrete work.----hrishyamukh rd block area , 1st category graded stone aggregate of size in between 12.5 mm to 20 mm nominal size ( >12.5 mmto < 20 mm ) for concrete work. percentage of different sizes will be as per standard specification of concrete work.----bc nagar rd block & belonia municipal council area , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand , sand