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Levant Mine
Levant Mine and Beam Engine is a National Trust property at Trewellard, Pendeen, near St Just, Cornwall, England, UK. Its main attraction is that it has the world's oldest Cornish steam winding engine still working in its original location (and the last such engine still in steam in Cornwall). There is also a visitor centre, a short underground tour, and the South West Coast Path leads to Botallack Mine, via a cliff-top footpath. In 1919 the engine used to transport men between the different levels of the mine failed, leading to the deaths of thirty-one men. Since 2006, the area has been part of the UNESCO World Heritage Site, Cornwall and West Devon Mining Landscape. Location The property is on the site of the former Levant Mine, established in 1820 and closed in 1930, where tin and copper ores were raised. The mine reached a depth of about 600 metres. It got the nickname "mine under the sea", because tunnels were driven up to 2.5 km from the cliffs under the sea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trewellard
Trewellard (from , meaning "Gwyllard's settlement"; ) is a small village on the north coast road between St Just in Penwith, St Just and St Ives, Cornwall, St Ives in Cornwall, England, United Kingdom. It lies along the B3306 road which connects St Ives, Cornwall, St Ives to the A30 road. It is situated 7 miles from Land's End and 7 miles from Penzance. It is in the civil parish of St Just in Penwith, St Just and the electoral division of St Just in Penwith (electoral division), St Just in Penwith. Trewellard lies within the Cornwall Area of Outstanding Natural Beauty (AONB). Almost a third of Cornwall has AONB designation, with the same status and protection as a National Park. History and geography The village is in an area of outstanding natural beauty and a Site of Special Scientific Interest (Site of Special Scientific Interest, SSSI) due to the ancient tin workings and the penultimate working tin mine in Cornwall, Geevor Tin Mine, Geevor, that closed finally in 1990. Geev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvey's Of Hayle
John Harvey was a Cornishman whose career started as a blacksmith and engineer at Carnhell Green near Hayle, in west Cornwall. In 1779 he established a foundry and engineering works at Hayle called Harvey & Co. By 1800 the company employed more than 50 people and continued to grow as Harvey worked with many of the great Cornish engineers and entrepreneurs of the day. These included Richard Trevithick, William West, and, more importantly, Arthur Woolf. In 1797, Harvey's daughter, Jane, married Richard Trevithick. Harvey & Co. built up a reputation for world class stationary beam engines designed to pump water out of the deep Cornish tin and copper mines. The Cornish beam engine became world-famous and was exported overseas, and remains the largest type of beam engine ever constructed; the largest of all, with a cylinder which powered eight separate beams, was used to drain the Haarlemmermeer in the Netherlands—it is preserved in the Museum De Cruquius. Harvey's also produc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheal Jane
Wheal Jane is a disused tin mine near Baldhu and Chacewater in West Cornwall, England, United Kingdom. The area itself consisted of a large number of mines. History Wheal Jane was probably seriously worked for tin from the mid-18th century. Given the complexity of ore ore genesis, formation near granite, granitic emplacements, amounts of arsenic, copper, silver and zinc were also worked at some time. In around 1885, most of the nearby mines became uneconomic. Wheal Jane was able to struggle on for a few years, principally due to its arsenic revenue, but it too succumbed in around 1895. It re-opened in 1906 as part of Falmouth Consolidated, with a modernisation and cost reducing agenda, but it was to close again within a decade. Work recommenced at low intensity in the run up to World War II but interest was turning to more modern processing techniques to recover more tin from what was already available and the old mine spoil was re-worked until 1946. It was re-opened again i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Crofty
South Crofty is a metalliferous tin and copper mine located in the village of Pool, Cornwall, England. An ancient mine, it has seen production for over 400 years, and extends almost two and a half miles across and down and has mined over 40 lodes. Evidence of mining activity in South Crofty has been dated back to 1592, with full-scale mining beginning in the mid-17th century. The mine went into serious decline after 1985 and eventually closed in 1998. After several changes of ownership, South Crofty is owned by Cornish Metals Inc, which is working to re-open the mine, as of November 2022, having received a permit for dewatering the mine. History South Crofty Mine, at Pool between Camborne and Redruth, is an ancient tin mine. For several centuries its shallow workings exploited copper rather than the deeper tin mineralisation. References implying mining, rather than streaming, occur in the area as early as 1592, and clearly by the mid-17th century mining was well establishe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geevor Tin Mine
Geevor Tin Mine (from , meaning "mine of the goats"), formerly North Levant Mine is a tin mine in the far west of Cornwall, England, between the villages of Pendeen and Trewellard. It was operational between 1911 and 1990 during which time it produced about 50,000 tons of black tin. It is now a museum and heritage centre left as a living history of a working tin mine. The museum is an Anchor Point of ERIH, The European Route of Industrial Heritage. Since 2006, the mine has been part of the UNESCO World Heritage Site Cornwall and West Devon Mining Landscape. History Tin and copper have been mined from the general area of Geevor since the late 18th century. It was originally a small enterprise known as ''Wheal an Giver'', "a piece of ground occupied by goats". The area was worked under the name of East Levant Mine until 1840 and then as North Levant from 1851 to 1891 when it closed.Stanier, 1998 p.53 During the 1880s as many as 176 workers were employed at the mine, but in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Man Engine
A man engine is a mechanism of reciprocating ladders and stationary platforms installed in Mining, mines to assist the miners' journeys to and from the working levels. It was invented in Germany in the 19th century and was a prominent feature of tin and copper mines in Cornwall until the beginning of the twentieth century. Operation In the Cornish examples the motive power was provided by waterwheels, or one of the mine's steam engines. The steam engine or water wheel would be linked to a series of beams – known as "rods" – fastened together and reaching to the bottom of the mineshaft. These were arranged to offer a reciprocating motion of, typically, twelve to fifteen feet (three to five metres). Small foot platforms were attached to the rods at the same distance apart as the engine stroke and fixed platforms ("sollars") were built onto the shaft walls, spaced to coincide with the top and bottom positions of each of the moving platforms. The moving platforms were often sm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Hunt (scientist)
Robert Hunt (6 September 1807 – 17 October 1887) was a British mineralogist, as well as an antiquarian, an amateur poet, and an early pioneer of photography. He was born at Devonport, Plymouth and died in London on 17 October 1887. Life and work Early life Hunt's father, a naval officer, drowned while Robert was a youth. Robert began to study in London for the medical profession, but ill-health caused him to return to settle in Cornwall. In 1829, he published ''The Mount’s Bay; a descriptive poem ... and other pieces'' but received little critical or financial success.Alan Pearson, 'Hunt, Robert (1807–1887)’, Oxford Dictionary of National Biography, Oxford University Press, 200 Retrieved 16 Jan 2011/ref> In 1840, Hunt became secretary to the Royal Cornwall Polytechnic Society at Falmouth. Here he met Robert Were Fox, and carried on some physical and chemical investigations with him. Career He was appointed Professor of Mechanical Science, Government School of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chalcocite
Chalcocite (), copper(I) sulfide (Cu2S), is an important copper ore mineral. It is opaque and dark gray to black, with a metallic luster. It has a hardness of 2.5–3 on the Mohs scale. It is a sulfide with a monoclinic crystal system. The term ''chalcocite'' from the Greek ''khalkos'', meaning "copper". It is also known as redruthite, vitreous copper, or copper-glance. Occurrence Chalcocite is sometimes found as a primary vein mineral in hydrothermal veins. However, most chalcocite occurs in the supergene enriched environment below the oxidation zone of copper deposits as a result of the leaching of copper from the oxidized minerals. It is also often found in sedimentary rocks. It has been mined for centuries and is one of the most profitable copper ores. The reasons for this is its high copper content (66.7% atomic ratio and nearly 80% by weight) and the ease at which copper can be separated from sulfur. Since chalcocite is a secondary mineral that forms from the al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aragonite
Aragonite is a carbonate mineral and one of the three most common naturally occurring crystal forms of calcium carbonate (), the others being calcite and vaterite. It is formed by biological and physical processes, including precipitation from marine and freshwater environments. The crystal lattice of aragonite differs from that of calcite, resulting in a different crystal shape, an orthorhombic crystal system with acicular crystal. Repeated twinning results in pseudo-hexagonal forms. Aragonite may be columnar or fibrous, occasionally in branching helictitic forms called ''flos-ferri'' ("flowers of iron") from their association with the ores at the Carinthian iron mines. Occurrence The type location for aragonite is Molina de Aragón in the Province of Guadalajara in Castilla-La Mancha, Spain, for which it was named in 1797. Aragonite is found in this locality as cyclic twins inside gypsum and marls of the Keuper facies of the Triassic. This type of aragoni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcite
Calcite is a Carbonate minerals, carbonate mineral and the most stable Polymorphism (materials science), polymorph of calcium carbonate (CaCO3). It is a very common mineral, particularly as a component of limestone. Calcite defines hardness 3 on the Mohs scale of mineral hardness, based on Scratch hardness, scratch hardness comparison. Large calcite crystals are used in optical equipment, and limestone composed mostly of calcite has numerous uses. Other polymorphs of calcium carbonate are the minerals aragonite and vaterite. Aragonite will change to calcite over timescales of days or less at temperatures exceeding 300 °C, and vaterite is even less stable. Etymology Calcite is derived from the German , a term from the 19th century that came from the Latin word for Lime (material), lime, (genitive ) with the suffix ''-ite'' used to name minerals. It is thus a Doublet (linguistics), doublet of the word ''wikt:chalk, chalk''. When applied by archaeology, archaeologists and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bismuth
Bismuth is a chemical element; it has symbol Bi and atomic number 83. It is a post-transition metal and one of the pnictogens, with chemical properties resembling its lighter group 15 siblings arsenic and antimony. Elemental bismuth occurs naturally, and its sulfide and oxide forms are important commercial ores. The free element is 86% as dense as lead. It is a brittle metal with a silvery-white color when freshly produced. Surface oxidation generally gives samples of the metal a somewhat rosy cast. Further oxidation under heat can give bismuth a vividly iridescent appearance due to thin-film interference. Bismuth is both the most diamagnetic element and one of the least thermally conductive metals known. Bismuth was formerly understood to be the element with the highest atomic mass whose nuclei do not spontaneously decay. However, in 2003 it was found to be very slightly radioactive. The metal's only primordial isotope, bismuth-209, undergoes alpha decay with a half-l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver
Silver is a chemical element; it has Symbol (chemistry), symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. Silver is found in the Earth's crust in the pure, free elemental form ("native metal, native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc Refining (metallurgy), refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes bimetallism, alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of the seven metals of antiquity, silver has had an enduring role in most human cultures. Other than in currency and as an in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
