Map Of gypsum deposits in northern Ohio, black squares reveal The placement of deposits, from "Geography of Ohio", 1923 Gypsum is Utilized in a wide variety of programs: Soil Modification: Gypsum, also called land plaster, is employed as being a soil conditioner to further improve its composition and fertility. It https://www.propanraya.com/id/produk/eco-gypsum-ee-4050