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Eylesbarrow Tin Mine
Eylesbarrow mine was a tin mine on Dartmoor, Devon, England that was active during the first half of the 19th century. In its early years it was one of the largest and most prosperous of the Dartmoor tin mines, along with Whiteworks and the Birch Tor and Vitifer mines. Its name has several variant spellings, such as Eylesburrow, Ailsborough, Ellisborough, Hillsborough etc. It was also known as Wheal Ruth for a short period around 1850. The extensive remains lie to the north of the River Plym, less than north-east of Drizzlecombe, on the southern shoulder of the hill called Eylesbarrow on top of which are two prominent Bronze Age barrows. Geology The country rock of the mine is granite. The large mining sett (about ) is crossed by many tin-bearing lodes which are substantially vertical and trend east-north-east. Most of the mine's excavations were made into just three of these lodes and were relatively shallow.Cook et al. 1974, Appendix A, pp.200-201 The formation of the lodes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dartmoor
Dartmoor is an upland area in southern Devon, South West England. The moorland and surrounding land has been protected by National Park status since 1951. Dartmoor National Park covers . The granite that forms the uplands dates from the Carboniferous Period of geological history. The landscape consists of moorland capped with many exposed granite hilltops known as tors, providing habitats for wildlife. The highest point is High Willhays, above sea level. The entire area is rich in antiquities and archaeological artefacts. Dartmoor National Park is managed by the Dartmoor National Park Authority, whose 22 members are drawn from Devon County Council, local district councils and Government. The Dartmoor Commoners' Council exists to create and enforce regulations regarding commoners' rights. Parts of Dartmoor have been used as military firing ranges for over 200 years. The public is granted extensive land access rights on Dartmoor (including restricted access to the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaolinite
Kaolinite ( ; also called kaolin) is a clay mineral, with the chemical composition Al2 Si2 O5( OH)4. It is a layered silicate mineral, with one tetrahedral sheet of silica () linked through oxygen atoms to one octahedral sheet of alumina (). Kaolinite is a soft, earthy, usually white, mineral (dioctahedral phyllosilicate clay), produced by the chemical weathering of aluminium silicate minerals like feldspar. It has a low shrink–swell capacity and a low cation-exchange capacity (1–15 meq/100 g). Rocks that are rich in kaolinite, and halloysite, are known as kaolin () or china clay. In many parts of the world kaolin is colored pink-orange-red by iron oxide, giving it a distinct rust hue. Lower concentrations of iron oxide yield the white, yellow, or light orange colors of kaolin. Alternating lighter and darker layers are sometimes found, as at Providence Canyon State Park in Georgia, United States. Kaolin is an important raw material in many industries and app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tin Coinage
In Devon and Cornwall, tin coinage was a tax on refined tin, payable to the Duchy of Cornwall and administered in the Stannary Towns. The oldest surviving records of coinage show that it was collected in 1156. It was abolished by the Tin Duties Act 1838. Method After smelting, the tin was cast into blocks which were taken to the Stannary towns to be proved. Initially irregular in shape, by the 19th century these blocks became standardised as bevel-edged rectangular cuboids weighing . The blocks were marked with a stamp identifying where they had been smelted. At the stannary town the prover, a duchy officer, struck off the corners of the blocks to check the quality of the metal. If proved and the duty paid, a duchy seal was affixed and the blocks permitted to be sold. In the 16th century proving took place only twice a year, at Midsummer and Michaelmas, but afterwards took place quarterly. Under Edmund, 2nd Earl of Cornwall the duty paid in Cornwall was a halfpenny p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Tin
White tin is refined metallic tin. It contrasts with black tin, which is unrefined tin ore (cassiterite) as extracted from the ground. The term "white tin" was historically associated with tin mining in Devon and Cornwall where it was smelted from black tin in blowing houses. White tin may also refer specifically to β-tin, the metallic allotrope of the pure element, as opposed to the nonmetallic allotrope α-tin (also known as gray tin), which occurs at temperatures below , a transformation known as tin pest). White tin has tetragonal unit cell. References * * * * White White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ... Mining in Cornwall {{mining-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Auction
A government auction or a public auction is an auction held on behalf of a government in which the property to be auctioned is either property owned by the government or property which is sold under the authority of a court of law or a government agency with similar authority. Variations When the term "government auction" is used it often means that a general auctioneer has been contracted to deal with stock that needs to be liquidated by various government bodies: * Rights to transmit signals on bands of electromagnetic spectrum * Customs: seized smuggled items * Defense: military surplus * Police auction: proceeds of crime * Post office, transport: lost property * Warrant sale: assets of debtors * Tax sale: seized assets * Court auction: items sold to satisfy a court judgment, like storage contents of not-paying tenants * Insolvent companies where the government is the liquidator (e.g. official receiver) * Unowned property Often goods sold at government auctions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Mining Journal (trade Magazine)
''The Mining Journal'' is a magazine that covers global mining investment, finance, and business. Origins ''The'' ''Mining Journal'' was founded in 1835 in London by Henry English, a London stockbroker under the name of ''Mining Journal and Commercial Gazette''. In 1860, it was renamed to ''The Mining Journal, Railway and Commercial Gazette.'' Its name was changed to ''The Mining Journal'' in 1910. In the early days of ''The Mining Journal'', then known as ''The Mining Journal and Commercial Gazette'', it carried information on a range of subjects, from mining, mines, machinery and metals prices, to news items and stories of general interest. The early issues also provided a glossary of mining terms, updated regularly, and noted all known mine accidents. In 1963, The Mining Journal Ltd took over rival publication ''Mining Magazine'', which had been founded in 1909 by Herbert Hoover, later to become President of the US, while he was a mining engineer then working in London. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lee Moor
Lee may refer to: Arts and entertainment * ''Lee'' (2007 film), Tamil-language sports action film * ''Lee'' (2017 film), Kannada-language action film * ''Lee'' (2023 film), biographical drama about Lee Miller, American photojournalist * ''Lee'' (novel), by Tito Perdue, about an angry and well-read septuagenarian * "Lee", a 1973 single by The Detroit Emeralds * "Lee", a 2001 song by Tenacious D from their eponymous album Businesses Finance *Thomas H. Lee Partners, an American private equity firm founded in 1974 ** Lee Equity Partners, a breakaway firm founded in 2006 Manufacturers * Lee Tires, a division of Goodyear *Lee Filters, a maker of lighting filters Other businesses * Lee (brand), an American clothing brand * Lee Enterprises, an American media company (NYSE: LEE) * Lee Data, a defunct American computer company Education * Lee College, Bayton, Texas, United States * Lee University, Cleveland, Tennessee, US Meteorology * List of storms named Lee * Lee w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smelting
Smelting is a process of applying heat and a chemical reducing agent to an ore to extract a desired base metal product. It is a form of extractive metallurgy that is used to obtain many metals such as iron-making, iron, copper extraction, copper, silver mining#Ore processing, silver, tin, lead smelting, lead and zinc smelting, zinc. Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and leaving the metal behind. The reducing agent is commonly a fossil-fuel source of carbon, such as carbon monoxide from incomplete combustion of coke (fuel), coke—or, in earlier times, of charcoal. The oxygen in the ore binds to carbon at high temperatures, as the Chemical energy, chemical potential energy of the bonds in carbon dioxide () is lower than that of the bonds in the ore. Sulfide ores such as those commonly used to obtain copper, zinc or lead, are roasting (metallurgy), roasted before smelting in order to convert the sulfid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Tin
Black tin is the raw ore of tin, usually cassiterite, as sold by a tin mine to a smelting company. After mining, the ore must be concentrated by several processes to reduce the amount of gangue it contains before it can be sold. It contrasts with white tin, which is the refined, metallic tin produced after smelting. The term "black tin" was historically associated with tin mining in Devon and Cornwall. References * * * * Black Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without chroma, like white and grey. It is often used symbolically or figuratively to represent darkness.Eva Heller, ''P ... Mining in Cornwall {{Mining-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sheepstor
Sheepstor is a village, civil parish and former manor on the western side of Dartmoor in the county of Devon, England. In 2001, its population was 53, down from 95 in 1901. For administrative purposes the parish is grouped with the parishes of Meavy and Walkhampton to form Burrator Parish Council, and for electoral purposes it is grouped with the same two parishes to form Burrator Ward. Burrator Reservoir, constructed in 1898, is to the north of the village and forms part of the northern boundary of the parish. The name ''Sheepstor'' has evolved considerably since the first reference to a settlement here which was recorded in a pipe roll of 1168 as ''Sitelestorra''. In a document of 1262, it was ''Skytelestor'', ''Shittestorre'' in 1474, ''Shistor'' in 1547 and in c. 1620 Tristram Risdon called it ''Shetelstor now Shepstor''. The name probably derives from the Old English ''scyttel(s)'' meaning a bar or bolt, reflecting the shape of the nearby Sheeps Tor. Manor The manor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dartmoor Tin-mining
The tin mining industry on Dartmoor, Devon, England, is thought to have originated in pre-Roman times, and continued right through to the 20th century, when the last commercially worked mine (Golden Dagger Mine) closed in November 1930 (though it saw work during the Second World War), and "composite mines" such as those producing tin as a by- product, such as Hemerdon Mine in Plympton continue to operate today. From the 12th century onwards tin mining was regulated by a stannary parliament which had its own laws. Tin is smelted from cassiterite, a mineral found in hydrothermal veins in granite, and the uplands of Dartmoor were a particularly productive area. The techniques used for the extraction of tin from Dartmoor followed a progression from streaming through open cast mining to underground mining. Today, there are extensive archaeological remains of these three phases of the industry, as well as of the several stages of processing that were necessary to convert the ore to ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
