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Safety-lamp
A safety lamp is any of several types of lamp that provides illumination in places such as coal mines where the air may carry coal dust or a build-up of flammable gases, which may explode if ignited, possibly by an electric spark. Until the development of effective electric lamps in the early 1900s, miners used flame lamps to provide illumination. Open flame lamps could ignite flammable gases which collected in mines, causing explosions; safety lamps were developed to enclose the flame to prevent it from igniting the explosive gases. Flame safety lamps have been replaced for lighting in mining with sealed explosion-proof electric lights, but continue to be used to detect gases. Background Damps or gases Miners have traditionally referred to the various gases encountered during mining as damps, from the Middle Low German word ''dampf'' (meaning " vapour"). Damps are variable mixtures and are historic terms. * '' Firedamp'' Naturally occurring flammable mixtures, principa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Davy Lamp
The Davy lamp is a safety lamp used in flammable atmospheres, invented in 1815 by Sir Humphry Davy.Brief History of the Miner's Flame Safety Lamp at minerslamps.net. Accessed 7 July 20121 It consists of a Candle wick, wick lamp with the flame enclosed inside a mesh screen. It was created for use in coal mines, to reduce the danger of explosions due to the presence of methane and other flammable gases, called ''firedamp'' or ''Damp (mining), minedamp.'' History German polymath Alexander von Humboldt, working for the German Bureau of Mines, had concerns for the health and welfare of the miners and invented a kind of respirator and "four lamps of different construction suitable for employment in various circumstances. The respirator was to prevent the inhaling o ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geordie Lamp
The Geordie lamp was a safety lamp for use in flammable atmospheres, invented by George Stephenson in 1815 as a miner's lamp to prevent explosions due to firedamp in coal mines. Origin In 1815, Stephenson was the engine-wright at the Killingworth Colliery in Northumberland and had been experimenting for several years with candles close to firedamp emissions in the mine. In August, he ordered an oil lamp, which was delivered on 21 October and tested by him in the mine in the presence of explosive gases. He improved this over several weeks with the addition of capillary tubes at the base so that it gave more light, and tried new versions on 4 and 30 November. This was presented to the Literary and Philosophical Society of Newcastle upon Tyne (Lit & Phil) on 5 December 1815. Although controversy arose between Stephenson's design and the Davy lamp (invented by Humphry Davy in the same year), Stephenson's original design worked on significantly different principles from Davy's fina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Mine
Coal mining is the process of resource extraction, extracting coal from the ground or from a mine. Coal is valued for its Energy value of coal, energy content and since the 1880s has been widely used to Electricity generation, generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a "pit", and above-ground mining structures are referred to as a "pit head". In Australia, "colliery" generally refers to an underground coal mine. Coal mining has had many developments in recent years, from the early days of men tunneling, digging, and manually extracting the coal on carts to large Open-pit mining, open-cut and Longwall mining, longwall mines. Mining at this scale requires the use of Dragline excavator, draglines, trucks, conveyors, hydraulic jacks, and shearers. The coal mining industry has a long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Damp (mining)
Coal mining is the process of extracting coal from the ground or from a mine. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a "pit", and above-ground mining structures are referred to as a " pit head". In Australia, "colliery" generally refers to an underground coal mine. Coal mining has had many developments in recent years, from the early days of men tunneling, digging, and manually extracting the coal on carts to large open-cut and longwall mines. Mining at this scale requires the use of draglines, trucks, conveyors, hydraulic jacks, and shearers. The coal mining industry has a long history of significant negative environmental impacts on local ecosystems, health impacts on local communit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Stephenson
George Stephenson (9 June 1781 – 12 August 1848) was an English civil engineer and Mechanical engineering, mechanical engineer during the Industrial Revolution. Renowned as the "Father of Railways", Stephenson was considered by the Victorian era, Victorians as a great example of diligent application and thirst for improvement. His chosen Track gauge#The Stockton and Darlington Railway, rail gauge, sometimes called "Stephenson gauge", was the basis for the standard gauge used by most of the world's railways. Pioneered by Stephenson, rail transport was one of the most important technological inventions of the 19th century and a key component of the Industrial Revolution. Built by George and his son Robert Stephenson, Robert's company Robert Stephenson and Company, the Locomotion No. 1, ''Locomotion'' No. 1 was the first steam locomotive to carry passengers on a public rail line, the Stockton and Darlington Railway in 1825. George also built the first public inter-city railway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Firedamp
Firedamp is any flammable gas found in coal mines, typically coalbed methane. It is particularly found in areas where the coal is bituminous. The gas accumulates in pockets in the coal and adjacent strata and, when they are penetrated, the release of the gas can cause explosions. Historically, if such a pocket was highly pressurized, it was termed a "bag of foulness". Name Damp is the collective name given to all gases (other than air) found in coal mines in Great Britain and North America. As well as firedamp, other damps include '' blackdamp'' (nonbreathable mixture of carbon dioxide, water vapour and other gases); whitedamp (carbon monoxide and other gases produced by combustion); poisonous, explosive '' stinkdamp'' (hydrogen sulfide), with its characteristic rotten-egg odour; and the insidiously lethal '' afterdamp'' (carbon monoxide and other gases) which are produced following explosions of firedamp or coal dust. Etymology Often hyphenated as fire-damp, this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flint
Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires. Flint occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones.''The Flints from Portsdown Hill'' Inside the nodule, flint is usually dark grey or black, green, white, or brown in colour, and has a glassy or waxy appearance. A thin, oxidised layer on the outside of the nodules is usually different in colour, typically white and rough in texture. The nodules can often be found along s and [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bioluminescence
Bioluminescence is the emission of light during a chemiluminescence reaction by living organisms. Bioluminescence occurs in multifarious organisms ranging from marine vertebrates and invertebrates, as well as in some Fungus, fungi, microorganisms including some bioluminescent bacteria, Dinoflagellate, dinoflagellates and terrestrial arthropods such as Firefly, fireflies. In some animals, the light is bacteriogenic, produced by symbiosis, symbiotic bacteria such as those from the genus ''Vibrio''; in others, it is autogenic, produced by the animals themselves. In most cases, the principal chemical reaction in bioluminescence involves the reaction of a substrate called luciferin and an enzyme, called luciferase. Because these are generic names, luciferins and luciferases are often distinguished by the species or group, e.g. firefly luciferin or Vargulin, cypridina luciferin. In all characterized cases, the enzyme Catalysis, catalyzes the Redox, oxidation of the luciferin resultin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitehaven
Whitehaven is a town and civil parish in the Cumberland (unitary authority), Cumberland district of Cumbria, England. It is a port on the north-west coast, and lies outside the Lake District National parks of England and Wales, National Park. It is south-west of Carlisle. The parish also includes the small village of Sandwith, Cumbria, Sandwith. At the 2021 United Kingdom census, 2021 census the parish had a population of 24,040 and the Whitehaven built up area had a population of 22,945. The town's growth was largely due to the exploitation of the extensive coal measures by the Lowther family, driving a growing export of coal through the harbour from the 17th century onwards. It was also a major port for trading with the Thirteen Colonies, American colonies, and was, after London, the second busiest port of England by tonnage from 1750 to 1772. This prosperity led to the creation of a Georgian architecture, Georgian planned town in the 18th century which has left an architect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sir James Lowther, 4th Baronet
Sir James Lowther, 4th Baronet, FRS (1673 – 2 January 1755) was an English landowner, industrialist and Whig politician who sat in the House of Commons for 54 years between 1694 and 1755. His ownership and development of coal mines around Whitehaven in Cumberland gave him substantial revenues, and he was reputed the richest commoner in England. Early life Lowther was baptised on 5 August 1673 at St Giles in the Fields, London, the second son of Sir John Lowther, 2nd Baronet and Jane Leigh. Educated privately in London, he attended Queen's College, Oxford and the Middle Temple. On the death of his father in 1706, the baronetcy was inherited by James's elder brother Christopher, but Christopher (whose drinking and gambling had led his father to disinherit him) was cut off with an annuity of about £100 a year and the family properties passed to James, who subsequently inherited the baronetcy in 1731, when his brother died without children. Politics In 1694, Lowther was ret ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mine Safety Lamp
Mine, mines, miners or mining may refer to: Extraction or digging *Miner, a person engaged in mining or digging *Mining, extraction of mineral resources from the ground through a mine Grammar *Mine, a first-person English possessive pronoun Military * Mining (military), digging under a fortified military position to penetrate its defenses * Mine warfare ** Anti-tank mine, a land mine made for use against armored vehicles ** Antipersonnel mine, a land mine targeting people walking around, either with explosives or poison gas ** Bangalore mine, colloquial name for the Bangalore torpedo, a man-portable explosive device for clearing a path through wire obstacles and land mines ** Cluster bomb, an aerial bomb which releases many small submunitions, which often act as mines ** Land mine, explosive mines placed under or on the ground ** Naval mine, or sea mine, a mine at sea, either floating or on the sea bed, often dropped via parachute from aircraft, or otherwise lain by surface sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wallsend
Wallsend () is a town in North Tyneside, Tyne and Wear, England, at the eastern end of Hadrian's Wall. It has a population of 43,842 and lies east of Newcastle upon Tyne. History Roman Wallsend In Roman times, this was the site of the fort of Segedunum. This fort protected the eastern end of Hadrian's Wall, which did not terminate at the western wall of the fort, but continued from its south-eastern corner down to the shore of the River Tyne. As David Breeze writes, "In the early nineteenth century, as recorded by John Collingwood Bruce, Bruce, John Buddle the Younger had often seen the Wall foundations extending far into the river when swimming there as a boy." Pre-Conquest The withdrawal of the Romans from the Wall immediately brought the Picts from the north and shortly afterwards the Angles, sailing from near the mouth of the River Elbe with frequent raids both from sea and from land. Ida of Bernicia, Ida the Saxon laid waste to the whole of the north in 547 and Wallsend do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
