Calcium Carbonate has a wide area of application, ranging from agricultural, pharmaceutical, to  construction and other industries. It plays a major role in construction as a building material (Marble) or for road building purposes, as a whitening element in the production of many ceramic items, as an extender in protective, water based and solvent based paints, and as a filler in plastics. It also finds application in paper, powder coating, printing inks, sealants, rubber and adhesives. This chemical compound also forms one of the major components of the blackboards that are used in many schools and institutions