Cement grinding is done in four cement mills. Two mills are operating with open circuit grinding with 135 tons/hour OPC and 105 tons/hour SRC. Other two mills are operating with o-sepa separator on closed circuit method with 155 tons per hr OPC and 145 tons per hour SRC. All mills are driven by a special wrap around variable speed motor of 5400 KW rating. Like the raw mills these mills are also equipped with hydrostatic slide shoe bearings. To protect cement from premature hydration and minimize internal condensation, cement is being stored in well-ventilated concrete silos. There are four silos having a storage capacity of 10,000 M Tons and one silo with 2,500 M Tons capacity.