Fertilizer: From The late 18th and early 19th centuries, Nova Scotia gypsum, normally often called plaster, was a really sought fertilizer for wheat fields in The us. Impurities in refinery gypsum waste have, in lots of cases, prevented them from getting used as ordinary gypsum in fields such as building. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050