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Salt, also referred to as table salt or by its chemical formula NaCl (sodium chloride), is an ionic compound made of sodium and chloride ions. All life depends on its chemical properties to survive. It has been used by humans for thousands of years, from food preservation to seasoning. Salt's ability to preserve food was a founding contributor ...
Salt. Rock salt (halite) In common usage, salt is a mineral composed primarily of sodium chloride (NaCl). When used in food, especially in granulated form, it is more formally called table salt. In the form of a natural crystalline mineral, salt is also known as rock salt or halite. Salt is essential for life in general, and saltiness is one of ...
December 7, 1948 (age 75) Hartford, Connecticut. Occupation. Journalist. author. Genre. Nonfiction. Mark Kurlansky (December 7, 1948) is an American journalist and author who has written a number of books of fiction and nonfiction. His 1997 book, Cod: A Biography of the Fish That Changed the World (1997), was an international bestseller and was ...
The mine features an underground lake, exhibits on the history of salt mining, and a 3.5-kilometre (2.2-mile) visitors' route (less than 2 percent of the mine passages' total length) including statues carved from the rock salt at various times. In 1978 the Wieliczka Salt Mine was placed on the original UNESCO list of World Heritage Sites. [8]
Salt in Chinese history. Salt in Chinese history including salt production and salt taxes played key roles in economic development, and relations between state and society in China. The lure of salt profits led to technological innovation and new ways to organize capital. Debate over government salt policies brought forth conflicting attitudes ...
B. First Battle of Saltville. Second Battle of Saltville. Budweis–Linz–Gmunden Horse-Drawn Railway. Bullitt's Lick.
Khewra Salt Mines, the world's second largest salt-mining operation, spanning over 300 km. It was first discovered by a horse of Alexander the Great. The mine is still operation till today. Poland. Wieliczka and Bochnia, both established in the mid-13th century and still operating, mostly as museums.
Salt (chemistry) The crystal structure of sodium chloride, NaCl, a typical salt. The purple spheres represent sodium cations, Na +, and the green spheres represent chloride anions, Cl −. The yellow stipples show the electrostatic forces. In chemistry, a salt or ionic compound is a chemical compound consisting of an assembly of positively ...