RUMORED BUZZ ON CAL PORTLAND CEMENT COMPANY

Portland cement accounts for in excess of ninety five% of all cement created. To help make Portland cement, clay, shale and limestone is ground to a powder and baked in a very kiln. The baked mixture varieties clods (clinkers), which can be then ground up and blended with gypsum. Almost all of the raw materials are mined in open up pits. Michigan h