Map Of gypsum deposits in northern Ohio, black squares show the location of deposits, from "Geography of Ohio", 1923 Gypsum is used in a wide variety of applications: Rehydration: Among gypsum’s exclusive properties is its ability to reabsorb drinking water and return to its initial hydrated type when it comes https://www.propanraya.com/id/produk/eco-gypsum-ee-4050