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Cornish Hush Mine
The Cornish Hush Mine was a British lead ore and fluorspar mine in Weardale. Location The mine was located in the Howden Burn valley in the Bollihope Area of Weardale in the North Pennines, County Durham, England.Mindat''Cornish Hush Mine, Bollihope District, Weardale, North Pennines, Co. Durham, England, UK.''/ref> History The mine operated from at least 1863 to 1902 to mine lead ore and from 1971 to 1972 and from 1979 to 1980 to mine fluorspar .Durham Mining Museum/ref> Lead mining One of the first publications about the Cornish Hush Mine described a fatal accident, in which miner John Collinson was buried underneath a large amount of rocks and lead ore falling onto him during his work and him killed immediately on 14 January 1863. A colleague named Bainbridge had worked with him about two minutes earlier and then moved about 6 foot (1.5 m) away to smoke his pipe as the stones fell onto Collinson. The stones were removed from him in a short time, but he was alread ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bollihope, Pikestone, Eggleston And Woodland Fells
Bollihope, Pikestone, Eggleston and Woodland Fells is a Site of Special Scientific Interest in the Teesdale district of west County Durham, England. It covers a broad expanse of moorland to the north and east of Middleton-in-Teesdale. The site has a diverse mix of habitats, mainly dry heath, with wet heath and blanket-mire in areas that are poorly drained. The SSSI, which is situated within the North Pennines Area of Outstanding Natural Beauty, shares a common boundary with the Upper Teesdale SSSI to the west, and adjoins Hamsterley Forest on three sides. The area supports breeding populations of a number of species of birds that are listed in the United Kingdom's Red Data Book (Birds), including three—merlin, Eurasian golden plover and short-eared owl—that are listed in Annex 1 of the European Commission's Birds Directive The Birds Directive (formally known as Council Directive 2009/147/EC on the conservation of wild birds) is the oldest piece of EU legislat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europium
Europium is a chemical element with the symbol Eu and atomic number 63. Europium is the most reactive lanthanide by far, having to be stored under an inert fluid to protect it from atmospheric oxygen or moisture. Europium is also the softest lanthanide, as it can be dented with a fingernail and easily cut with a knife. When oxidation is removed a shiny-white metal is visible. Europium was isolated in 1901 and is named after the continent of Europe. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3, but the oxidation state +2 is also common. All europium compounds with oxidation state +2 are slightly reducing. Europium has no significant biological role and is relatively non-toxic as compared to other heavy metals. Most applications of europium exploit the phosphorescence of europium compounds. Europium is one of the rarest of the rare-earth elements on Earth.Stwertka, Albert. ''A Guide to the Elements'', Oxford University Press, 1996, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beamish Museum
Beamish Museum is the first regional open-air museum, in England, located at Beamish, near the town of Stanley, in County Durham, England. Beamish pioneered the concept of a living museum. By displaying duplicates or replaceable items, it was also an early example of the now commonplace practice of museums allowing visitors to touch objects. The museum's guiding principle is to preserve an example of everyday life in urban and rural North East England at the climax of industrialisation in the early 20th century. Much of the restoration and interpretation is specific to the late Victorian and Edwardian eras, together with portions of countryside under the influence of industrial revolution from 1825. On its estate it uses a mixture of translocated, original and replica buildings, a large collection of artifacts, working vehicles and equipment, as well as livestock and costumed interpreters. The museum has received a number of awards since it opened to visitors in 1972 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Laxey Mine Railway
The Great Laxey Mine Railway ( Manx: ''Raad Yiarn Meain Mooar Laksaa'') was originally constructed to serve the Isle of Man's Great Laxey Mine, a lead mine located in Laxey. The gauge railway runs from the old mine entrance to the washing floors along a right of way that passes through the Isle of Man's only remaining railway tunnel (another at Dhoon West Quarry is disused) under the gauge Victorian Manx Electric Railway and the main A2 Douglas to Ramsey coast road. History The Great Laxey Mine was an extensive system of mine shafts and tunnels, which descended to a depth of 2,200 feet underground. The uppermost level of mine workings, known as the adit, was a series of tunnels extending to a mile and a half, which entered the hillside at ground level, and connected the heads of all the working mine shafts. Within this adit level a railway was provided from 1823, to allow transportation of mined ores from the mine shafts out to the external washing floors and mine yards. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flywheel
A flywheel is a mechanical device which uses the conservation of angular momentum to store rotational energy; a form of kinetic energy proportional to the product of its moment of inertia and the square of its rotational speed. In particular, assuming the flywheel's moment of inertia is constant (i.e., a flywheel with fixed mass and second moment of area revolving about some fixed axis) then the stored (rotational) energy is directly associated with the square of its rotational speed. Since a flywheel serves to store mechanical energy for later use, it is natural to consider it as a kinetic energy analogue of an electrical inductor. Once suitably abstracted, this shared principle of energy storage is described in the generalized concept of an accumulator. As with other types of accumulators, a flywheel inherently smooths sufficiently small deviations in the power output of a system, thereby effectively playing the role of a low-pass filter with respect to the mechanical velocity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinion
A pinion is a round gear—usually the smaller of two meshed gears—used in several applications, including drivetrain and rack and pinion systems. Applications Drivetrain Drivetrains usually feature a gear known as the pinion, which may vary in different systems, including * the typically smaller gear in a gear drive train (although in the first commercially successful steam locomotive—the ''Salamanca''—the ''pinion'' was rather large). In many cases, such as remote controlled toys, the pinion is also the drive gear for a reduction in speed, since electric motors operate at higher speed and lower torque than desirable at the wheels. However the reverse is true in watches, where gear trains commence with a high-torque, low-speed spring and terminate in the fast-and-weak escapement. * the smaller gear that drives in a 90-degree angle towards a crown gear in a differential drive. * the small front sprocket on a chain driven motorcycle. *the clutch bell gear when pair ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boiler
A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, central heating, boiler-based power generation, cooking, and sanitation. Heat sources In a fossil fuel power plant using a steam cycle for power generation, the primary heat source will be combustion of coal, oil, or natural gas. In some cases byproduct fuel such as the carbon monoxide rich offgasses of a coke battery can be burned to heat a boiler; biofuels such as bagasse, where economically available, can also be used. In a nuclear power plant, boilers called steam generators are heated by the heat produced by nuclear fission. Where a large volume of hot gas is available from some process, a heat recovery steam generator or recovery boiler can use the heat to produce steam, with little or no extra fuel consumed; such a configuration is common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crankshaft
A crankshaft is a mechanical component used in a piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating shaft containing one or more crankpins, that are driven by the pistons via the connecting rods. The crankpins are also called ''rod bearing journals'', and they rotate within the "big end" of the connecting rods. Most modern crankshafts are located in the engine block. They are made from steel or cast iron, using either a forging, casting or machining process. Design The crankshaft located within the engine block, held in place via main bearings which allow the crankshaft to rotate within the block. The up-down motion of each piston is transferred to the crankshaft via connecting rods. A flywheel is often attached to one end of the crankshaft, in order to smoothen the power delivery and reduce vibration. A crankshaft is subjected to enormous stresses, in some cases more than per cylinder. Crankshafts for single-cylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stephen Lewin
Stephen Lewin (c. 18221913) was an English architect, artist, civil engineer and iron-founder, who was a builder of steamboats and steam locomotives. Initially he worked in Boston, Lincolnshire, Boston in Lincolnshire as a civil engineer with his father William Lewin, who was an assistant to John Rennie the Elder. His should not be confused with his son, Stephen Samuel Lewin (c. 18481909), a successful artist who specialised in historical works often featuring cavaliers and figures in 17th-century costumes. Architectural practice After working with his civil engineer father, Lewin then set up an architectural practice in Boston and at the same time published a notable series of engravings of Medieval churches in the Parts of Holland in Lincolnshire. He was involved in the civic life in Boston and was Mayor in 1860-2 and 1861-2. His younger brother, Charles Augustus Lewin had moved to Poole in Dorset in 1856 as a timber merchant. In 1863, Lewin, who had entered into a partnership ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Laxey Mine
The Great Laxey Mine was a silver, lead ore and zinc mine located in Laxey, in the parish of Lonan, Isle of Man. The mine reached a depth in excess of and consisted primarily of three shafts: the Welsh Shaft, the 's Shaft and the Engine Shaft; each of these shafts was connected by a series of levels.''Mona's Herald.'' Wednesday, 23 March 1904; Page: 7 History Origins The Isle of Man contains a large variety of minerals. Copper ore was mined at Bradda Head as far back as the 13th century, Harald, King of Mann (1237–1248) having granted a charter under which the monks of Furness Abbey obtained working rights for this mine. Later in the same century the Earl of Buchan received a licence from King Edward I to dig for lead on the Calf of Man, and when the Isle of Man was granted to Sir John Stanley by King Henry IV in 1406, "''mines of lead and iron"'' were included. In 1700 almost 230 tons of copper ore was shipped from the Dhyrnane Mine at Maughold whilst also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorset
Dorset ( ; archaically: Dorsetshire , ) is a county in South West England on the English Channel coast. The ceremonial county comprises the unitary authority areas of Bournemouth, Christchurch and Poole and Dorset (unitary authority), Dorset. Covering an area of , Dorset borders Devon to the west, Somerset to the north-west, Wiltshire to the north-east, and Hampshire to the east. The county town is Dorchester, Dorset, Dorchester, in the south. After the Local Government Act 1972, reorganisation of local government in 1974, the county border was extended eastward to incorporate the Hampshire towns of Bournemouth and Christchurch. Around half of the population lives in the South East Dorset conurbation, while the rest of the county is largely rural with a low population density. The county has a long history of human settlement stretching back to the Neolithic era. The Roman conquest of Britain, Romans conquered Dorset's indigenous Durotriges, Celtic tribe, and during the Ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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