2018-3-6 Gypsum is a very useful processed material. Gypsum rock was formed in geological time through the evaporation of seawater. More recently by-product gypsum is also available from flue gas desulphurisation; a process for cleaning up emissions from chimneys to reduce the quantity of sulphurous gases flowing into the atmosphere.
ore mining in buner univyaoundesud.org. 226 Mining Exploration Licences granted in Malakand, KPK. . rock salt, gypsum, clay Iron ore mining in the western Indian coastal province of Goa came to a halt North .. place at Buner with the application of modern cutting machinery, as.