Map Of gypsum deposits in northern Ohio, black squares show the location of deposits, from "Geography of Ohio", 1923 Gypsum is Employed in numerous types of applications: Soil Modification: Gypsum, also referred to as land plaster, is utilized to be a soil conditioner to improve its composition and fertility. It https://www.propanraya.com/id/produk/eco-gypsum-ee-4050