Manufacture of cement

Title: Cement manufacturing Includes the manufacture of hydraulic cements (Portland cement, aluminium, superphosphate and other pulverized or non-pulverized hydraulic cements) and clinkers. Does not include:  Manufacture of mortars, concrete, cement and other mixtures of refractory products (23200);  Manufacture of cement products (236);  Manufacture of ready-to-use concrete (23630);  Manufacture of ready-to-use mortars (23640);  Manufacture of glue cement (23640);  Manufacture of cements or plasters for dental obstruction (32502);