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Nehemiah Champion
William Champion (1709–1789) is credited with patenting a process in Great Britain to distill zinc metal from calamine using charcoal in a smelter. Background After Abraham Darby I had left the Bristol Brass Company to form his own new copper works at Coalbrookdale, fellow Quaker Nehemiah Champion took over leadership. Nehemiah had three sons: John (1705–1794); Nehemiah (1709–1782); and the youngest William (1710–1789). Early life and patent As a young man, William Champion toured Europe to learn the art of brass making, returning to become a junior partner in the Bristol Brass Company in 1730. He then experimented for six years to develop a process to create zinc – then known as spelter. Using a scaled-up process similar to that used at the Zawar mines in India where this process was available centuries before William Champion rediscovered it, since the 12th century AD,p. 46, Ancient mining and metallurgy in Rajasthan, S. M. Gandhi, chapter 2 in ''Crustal Evolution and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc
Zinc is a chemical element; it has symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity ( electrowinning). Zinc is an essential trace element for humans, animals, plants and for microorganisms and is necessary for prenatal and postnatal development. It is the second most abundant trace metal in humans after iron, an import ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Blende
Sphalerite is a sulfide mineral with the chemical formula . It is the most important ore of zinc. Sphalerite is found in a variety of deposit types, but it is primarily in sedimentary exhalative, Mississippi-Valley type, and volcanogenic massive sulfide deposits. It is found in association with galena, chalcopyrite, pyrite (and other sulfides), calcite, dolomite, quartz, rhodochrosite, and fluorite. German geologist Ernst Friedrich Glocker discovered sphalerite in 1847, naming it based on the Greek word ''sphaleros'', meaning "deceiving", due to the difficulty of identifying the mineral. In addition to zinc, sphalerite is an ore of cadmium, gallium, germanium, and indium. Miners have been known to refer to sphalerite as ''zinc blende'', ''black-jack'', and ''ruby blende''. Marmatite is an opaque black variety with a high iron content. Crystal habit and structure Sphalerite crystallizes in the face-centered cubic zincblende crystal structure, which was named after the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineers From Bristol
Engineers, as practitioners of engineering, are professionals who invent, design, build, maintain and test machines, complex systems, structures, gadgets and materials. They aim to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin , the origin of the Ir. in the title of engineer in countries like Belgium, The Netherlands, and Indonesia) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of a licensed professional engineer typically include a four-year bachelor's degree in an engineering dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institute Of Metals
The Institute of Materials, Minerals and Mining (IOM3) is a British engineering institution with activities including promotion of the development of materials science. It has been a registered charity governed by a royal charter and a member of the United Kingdom's Science Council, since 2002. In 2019, the IOM3 celebrated the 150-year anniversary of the establishment of the Iron and Steel Institute which the IOM3 now encompasses. In 2022, it had a gross income of £3.99 million. Structure Having resided at Carlton House Terrace off Pall Mall in St James's in central London since 2002, the institute moved to 297 Euston Road on 30 June 2015. The organization has its membership, education, sales, and knowledge transfer office in Grantham. Members qualify for different grades of membership, ranging from Affiliate to Fellow of the Institute of Materials, Minerals and Mining (FIMMM), depending on academic qualifications and professional experience. IOM3 has an individual membershi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David & Charles
David & Charles Ltd is an English publishing company. It is the owner of the David & Charles imprint, which specialises in craft and lifestyle publishing. David and Charles Ltd acts as distributor for all David and Charles Ltd books and content outside North America, and also distributes Interweave Press publications in the UK and worldwide excluding North America, and as foreign language editions. The company distributes Dover Publications and Reader's Digest books into the UK Trade and is also a UK and Europe distribution platform for the overseas acquired companies Krause Publications and Adams Media. History The current company was founded in 2019, taking the original founding name of the business that was first established in 1960. The company is the UK distributor for Dover Publications. David and Charles was founded in Newton Abbot, England, on 1 April 1960 by David St John Thomas and Charles Hadfield. It made its name publishing titles on Britain's canals and rail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Smelting Company
The National Smelting Company was a nationalised zinc smelting company in Avonmouth, England. It was established by Minister of Munitions Winston Churchill to produce mustard gas during World War I. After World War I, it was bought by private business interests. From 1929 it became part of Australia's Imperial Smelting Corporation. The site – also known as the Britannia smelting works – was where the Imperial Smelting Process was developed. From 1967, the Avonmouth Works was home to the largest and most efficient zinc blast furnace in the world. The site remained operational until 2003 when the production of zinc, cadmium, lead and sulphuric acid ceased. The site is being redeveloped as a supermarket distribution centre for Asda and a recycling plant for SITA UK. Background During the later part of World War I, it was proposed to make Avonmouth Docks the UK centre of production of dichloroethyl sulphide, also known as mustard gas. However, its production was against the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bristol Harbour
Bristol Harbour is the harbour in the city of Bristol, England. The harbour covers an area of . It is the former natural tidal river River Avon, Bristol, Avon through the city but was made into its current form in 1809 when the tide was prevented from going out permanently. A tidal by-pass was dug for 2 miles through the fields of Bedminster for the river, known as the "River Avon New Cut", "New Cut", or simply "The Cut". It is often called the Floating Harbour as the water level remains constant and it is not affected by the state of the tide on the river in the Avon Gorge, The New Cut or the natural river southeast of Temple Meads to its source. Netham Lock at the east end of the 1809 Feeder Canal is the upstream limit of the floating harbour. Beyond the lock is a junction: on one arm the navigable River Avon continues upstream to Bath, Somerset, Bath, and on the other arm is the tidal natural River Avon. The first of the floating harbour, downstream from Netham Lock to Tott ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American War Of Independence
The American Revolutionary War (April 19, 1775 – September 3, 1783), also known as the Revolutionary War or American War of Independence, was the armed conflict that comprised the final eight years of the broader American Revolution, in which American Patriot forces organized as the Continental Army and commanded by George Washington defeated the British Army. The conflict was fought in North America, the Caribbean, and the Atlantic Ocean. The war's outcome seemed uncertain for most of the war. However, Washington and the Continental Army's decisive victory in the Siege of Yorktown in 1781 led King George III and the Kingdom of Great Britain to negotiate an end to the war in the Treaty of Paris two years later, in 1783, in which the British monarchy acknowledged the independence of the Thirteen Colonies, leading to the establishment of the United States as an independent and sovereign nation. In 1763, after the British Empire gained dominance in North America following its vic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paper Mill
A paper mill is a factory devoted to making paper from vegetable fibres such as wood pulp, old rags, and other ingredients. Prior to the invention and adoption of the Fourdrinier machine and other types of paper machine that use an endless belt, all paper in a paper mill was made by hand, one sheet at a time, by specialized laborers. History Historical investigations into the origin of the paper mill are complicated by differing definitions and loose terminology from modern authors: Many modern scholars use the term to refer indiscriminately to all kinds of mills, whether powered by humans, by animals or by water. Their propensity to refer to any ancient paper manufacturing center as a "mill", without further specifying its exact power source, has increased the difficulty of identifying the particularly efficient and historically important water-powered type. Human and animal-powered mills The use of human and animal powered mills was known to Muslim and Chinese paper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attorney General
In most common law jurisdictions, the attorney general (: attorneys general) or attorney-general (AG or Atty.-Gen) is the main legal advisor to the government. In some jurisdictions, attorneys general also have executive responsibility for law enforcement and prosecutions, or even responsibility for legal affairs generally. In practice, the extent to which the attorney general personally provides legal advice to the government varies between jurisdictions, and even between individual office-holders within the same jurisdiction, often depending on the level and nature of the office-holder's prior legal experience. Where the attorney general has ministerial responsibility for legal affairs in general (as is the case, for example, with the United States Attorney General or the Attorney-General for Australia, and the respective attorneys general of the states in each country), the ministerial portfolio is largely equivalent to that of a Minister of Justice in some other countries. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gloucester
Gloucester ( ) is a cathedral city, non-metropolitan district and the county town of Gloucestershire in the South West England, South West of England. Gloucester lies on the River Severn, between the Cotswolds to the east and the Forest of Dean to the west; it is sited from Monmouth, from Bristol, and east of the England and Wales border, border with Wales. Gloucester has a population of around 132,000, including suburban areas. It is a port, linked via the Gloucester and Sharpness Canal to the Severn Estuary. Gloucester was founded by the Roman Empire, Romans and became an important city and ''Colonia (Roman), colony'' in AD 97, under Nerva, Emperor Nerva as ''Glevum, Colonia Glevum Nervensis''. It was granted its first charter in 1155 by Henry II of England, Henry II. In 1216, Henry III of England, Henry III, aged only nine years, was crowned with a gilded iron ring in the Chapter House of Gloucester Cathedral. Gloucester's significance in the Middle Ages is unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Sea Bubble
South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both west and east. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþaz'' ("south"), possibly related to the same Proto-Indo-European root that the word ''sun'' derived from. Some languages describe south in the same way, from the fact that it is the direction of the sun at noon (in the Northern Hemisphere), like Latin meridies 'noon, south' (from medius 'middle' + dies 'day', ), while others describe south as the right-hand side of the rising sun, like Biblical Hebrew תֵּימָן teiman 'south' from יָמִין yamin 'right', Aramaic תַּימנַא taymna from יָמִין yamin 'right' and Syriac ܬܰܝܡܢܳܐ taymna from ܝܰܡܝܺܢܳܐ yamina (hence the name of Yemen, the land to the south/right of the Levant). South is sometimes abbreviated as S. Navigation By convention, the ''bottom or down ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
