Map Of gypsum deposits in northern Ohio, black squares reveal the location of deposits, from "Geography of Ohio", 1923 Gypsum is used in numerous types of apps: Plaster: Gypsum plaster is a versatile material employed for creating easy finishes on walls and ceilings. It might be used soaked and sets https://www.propanraya.com/id/produk/eco-gypsum-ee-4050