Map Of gypsum deposits in northern Ohio, black squares suggest the location of deposits, from "Geography of Ohio", 1923 Gypsum is Utilized in a wide variety of applications: Salt Flats: Gypsum is a common ingredient of salt flats, which can be expansive, flat parts with a salt crust within the https://www.propanraya.com/id/produk/eco-gypsum-ee-4050