The country of Iraq covers the region known since ancient times as Mesopotamia, a Greek word meaning land between the rivers.. The fertile valley between the Tigris and Euphrates rivers supported some of the worldâs earliest civilizations.
In Saskatchewan there are two grades of sodium sulphate: the first is a salt cake grade, which is primarily used for wood digestion in the pulp and paper industry; the second is a detergent grade product that is used in detergents, glass, dyes, textiles, tanning, and in the chemical industry.
Salt is expensive to remove from water, and salt content is an important factor in water use (such as potability). Increases in salinity have been observed in lakes and rivers in the United States, due to common road salt and other salt de-icers in runoff.