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Salt Mining
Salt mining extracts natural salt deposits from underground. The mined salt is usually in the form of halite (commonly known as rock salt), and extracted from evaporite Formation (geology), formations. History Before the advent of the modern internal combustion engine and earth-moving equipment, mining salt was one of the most expensive and dangerous of operations because of rapid dehydration caused by constant contact with the salt (both in the mine passages and scattered in the air as salt dust) and of other problems caused by accidental excessive sodium intake. Salt is now plentiful, but until the Industrial Revolution, it was difficult to come by, and salt was often mined by slaves or prisoners. Life expectancy for the miners was low. The earliest found salt mine was in Hallstatt, Austria where salt was mined, starting in 5000BC. As salt is a necessity of life, pre-industrial governments were usually keen to exercise stringent control over its production, often through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Mine 0096
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 (being the source of the essential Mineral (nutrient), dietary minerals Sodium#Biological role, sodium and Chlorine#Biological role, chlorine), and saltiness is one of the Basic tastes, basic human tastes. Salt is one of the oldest and most ubiquitous food seasonings, and is known to uniformly improve the taste perception of food. Salting (food), Salting, brining, and pickling are ancient and important methods of food preservation. Some of the earliest evidence of salt processing dates to around 6000 BC, when people living in the area of present-day Romania boiled spring (hydrology), spring water to extract salts; a Salt in Chinese History#Ancient China, Qin and Han dynasties, salt w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowuzhi
''Bowuzhi'' ( zh, c=博物志, tr=Records of Diverse Matters) by Zhang Hua (c. 290 CE) was a compendium of Chinese stories about natural wonders and marvelous phenomena. It quotes from many early Chinese classics, and diversely includes subject matter from Chinese mythology, history, geography, and folklore. The ''Bowuzhi'', which is one of the first works in the literary genre of '' zhiguai'' "tales of anomalies; supernatural stories", records the earliest versions of several myths, such as the white '' yenü'' "wild women" living south of China in a society without men. Scholars have described the ''Bowuzhi'' as "a miscellany of scientific interest" and "an important minor classic". Author The ''Bowuzhi'' author Zhang Hua (232-300) was a Western Jin dynasty (266-316) scholar, poet, and protoscientist. His biography in the (644) ''Book of Jin'' depicts Zhang Hua as a '' fangshi'' "master of esoterica" who was especially skilled at numerological arts, and a voracious collecto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Large Hole Drilling Rig
Large means of great size. Large may also refer to: Mathematics * Arbitrarily large, a phrase in mathematics * Large cardinal, a property of certain transfinite numbers * Large category, a category with a proper class of objects and morphisms (or both) * Large diffeomorphism, a diffeomorphism that cannot be continuously connected to the identity diffeomorphism in mathematics and physics * Large numbers, numbers significantly larger than those ordinarily used in everyday life * Large ordinal, a type of number in set theory * Large sieve, a method of analytic number theory ** Larger sieve, a heightening of the large sieve * Law of large numbers, a result in probability theory * Sufficiently large, a phrase in mathematics Other uses * ''Large'' (film), a 2001 comedy film * Large (surname), an English surname * LARGE, an enzyme * Large, a British English name for the maxima (music), a note length in mensural notation * Large, or G's, or grand, slang for $1,000 US dollars * Larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystal Valley (Khewra Salt Mines)
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification. The word ''crystal'' derives from the Ancient Greek word (), meaning both "ice" and " rock crystal", from (), "icy cold, frost". Examples of large crystals include snowflakes, diamonds, and table salt. Most inorganic solids are not crystals but polycrystals, i.e. many microscopic crystals fused together into a single solid. Polycrystals include most metals, rocks, ceramics, and ice. A third category of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compass Minerals
Compass Minerals International, Inc is an American public company that, through its subsidiaries, is a leading producer of minerals, including salt, magnesium chloride and sulfate of potash. Based in Overland Park, Kansas; the company provides bulk treated and untreated highway deicing salt to customers in North America and the United Kingdom and plant nutrition products to growers worldwide. Compass Minerals also produces consumer deicing and water conditioning products, consumer and commercial culinary salt, and other mineral-based products for consumer, agricultural and industrial applications. In addition, Compass Minerals provides records management services to businesses throughout the United Kingdom. Production methods and facilities Underground salt mining Underground salt mining produces rock salt using both drill-and-blast and continuous mining techniques in deep deposits. Compass Minerals is the largest rock salt producer in North America and the U.K. It operates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cargill
Cargill, Incorporated is an American multinational food corporation based in Minnetonka, Minnesota, Minnetonka, Minnesota, and incorporated in Wilmington, Delaware. Founded in 1865 by William Wallace Cargill, it is the largest privately held company in the United States in terms of revenue. Some of Cargill's major businesses are trading, purchasing and distributing cereal, grain and other agricultural commodity, commodities, such as palm oil; trading in energy, steel and transport; raising livestock and production of fodder, feed; and producing food ingredients such as starch and glucose syrup, vegetable oil, vegetable oils and fats for application in ultra-processed foods and industrial use. Cargill also has a large financial services arm, which manages financial risks in the commodity markets for the company. In 2003, it split off a portion of its financial operations into Black River Asset Management, a hedge fund with about $10 billion of assets and liabilities. It previou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AkzoNobel
Akzo Nobel N.V., stylised as AkzoNobel, is a Dutch multinational corporation, multinational company which creates paints and performance coatings for both industry and consumers worldwide. Headquartered in Amsterdam, the company has activities in more than 150 countries. AkzoNobel is the world's third-largest paint manufacturer by revenue after Sherwin-Williams and PPG Industries. History AkzoNobel has a long history of mergers and divestments. Parts of the current company can be traced back to 17th-century companies. History and formation of Akzo Akzo was formed in 1969 as merger of Algemene Kunstzijde Unie (General Artificial Silk Union; AKU) and Koninklijke Zout Organon (Royal Salt Organon; KZO). The AKU was formed in 1929 when the Vereinigte Glanzstoff-Fabriken (est. 1899) and Nederlandse Kunstzijdefabriek (ENKA, est. 1911) merged, forming Algemene Kunstzijde Unie (AKU). The latter faced, amongst others, technical problems in the manufacturing of synthetic fibers. Its fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borehole
A borehole is a narrow shaft bored in the ground, either vertically or horizontally. A borehole may be constructed for many different purposes, including the extraction of water ( drilled water well and tube well), other liquids (such as petroleum), or gases (such as natural gas). It may also be part of a geotechnical investigation, environmental site assessment, mineral exploration, temperature measurement, as a pilot hole for installing piers or underground utilities, for geothermal installations, or for underground storage of unwanted substances, e.g. in carbon capture and storage. Importance Engineers and environmental consultants use the term ''borehole'' to collectively describe all of the various types of holes drilled as part of a geotechnical investigation or environmental site assessment (a so-called Phase II ESA). This includes holes advanced to collect soil samples, water samples or rock cores, to advance ''in situ'' sampling equipment, or to install monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Production
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 (being the source of the essential Mineral (nutrient), dietary minerals Sodium#Biological role, sodium and Chlorine#Biological role, chlorine), and saltiness is one of the Basic tastes, basic human tastes. Salt is one of the oldest and most ubiquitous food seasonings, and is known to uniformly improve the taste perception of food. Salting (food), Salting, brining, and pickling are ancient and important methods of food preservation. Some of the earliest evidence of salt processing dates to around 6000 BC, when people living in the area of present-day Romania boiled spring (hydrology), spring water to extract salts; a Salt in Chinese History#Ancient China, Qin and Han dynasties, salt w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Song Dynasty
The Song dynasty ( ) was an Dynasties of China, imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Five Dynasties and Ten Kingdoms period#Ten Kingdoms, Ten Kingdoms, ending the Five Dynasties and Ten Kingdoms period. The Song frequently came into conflict with the contemporaneous Liao dynasty, Liao, Western Xia and Jin dynasty (1115–1234), Jin dynasties in northern China. After retreating to southern China following attacks by the Jin dynasty, the Song was eventually conquered by the Mongol-led Yuan dynasty. The History of the Song dynasty, dynasty's history is divided into two periods: during the Northern Song (; 960–1127), the capital was in the northern city of Bianjing (now Kaifeng) and the dynasty controlled most of what is now East China. The #Southern Song, 1127–1279, Southern Song (; 1127–1279) comprise the period following ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Evaporation Pond
A salt evaporation pond is a shallow artificial salt pan designed to extract salts from sea water or other brines. The salt pans are shallow and expansive, allowing sunlight to penetrate and reach the seawater. Natural salt pans are formed through geologic processes, where evaporating water leaves behind salt deposits. Some salt evaporation ponds are only slightly modified from their natural version, such as the ponds on Great Inagua in the Bahamas, or the ponds in Jasiira, a few kilometres south of Mogadishu, where seawater is trapped and left to evaporate in the sun. During the process of salt winning, seawater or brine is fed into artificially created ponds from which water is drawn out by evaporation, allowing the salt to be subsequently harvested. The ponds also provide a productive resting and feeding ground for many species of waterbirds, which may include endangered species. However, Ghanaian fisheries scientist RoseEmma Mamaa Entsua-Mensah also noted that salt win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
