Map Of gypsum deposits in northern Ohio, black squares reveal the location of deposits, from "Geography of Ohio", 1923 Gypsum is Employed in lots of purposes: Soil Modification: Gypsum, generally known as land plaster, is made use of like a soil conditioner to improve its framework and fertility. It Added https://www.propanraya.com/id/produk/eco-gypsum-ee-4050