Fertilizer: In The late 18th and early nineteenth hundreds of years, Nova Scotia gypsum, often called plaster, was a extremely sought fertilizer for wheat fields in The usa. Salt Flats: Gypsum is a standard part of salt flats, that are expansive, flat areas using a salt crust over the area. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050