Are You Mining Minerals for Cement, or for Concrete?
Aug 01, 2017#0183;#32;Limestone is one of the key minerals used in cement making. Limestone is a sedimentary rock composed mostly of the calcium carbonate (CaCO 3) and, according to the Mineral Education Coalition, comprises about 15% of the Earths sedimentary crust. Surface mining is the general excavation method.