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Penrhyn Dû Mines
The Penrhyn Dû Mines are a collection of mines situated near Llanengan on the Llŷn Peninsula. It encompasses the Penrhyn, Assheton, Western and Tan-y-Bwlch mines. The whole region can be called Penrhyn Du which literally means "black headland". Tan-y-Bwlch Mine was probably the richest of the mines with a recorded output of of lead ore, of zinc ore and of copper ore between 1873 and 1886. History There is a possibility that Roman miners were the first to mine the Penrhyn Dû headland After any Roman mining the mines were rarely worked until the reign of Elizabeth I where the need for lead was high. In 1637 Thomas Bushel was asked by Charles I to inspect and report on the prospects for Welsh mining. In his report of that year Bushel states: "...that at Pottherly there is a vein which has never been wrought though known about these twenty years..." during the 18th century various pumping engine powered by water wheels and horses were installed and in the early par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penrhyn Du Headland And Porth Bach - Geograph
Penryn is a Cornish word meaning 'headland' that may refer to: * Penryn, Cornwall, United Kingdom, a town of about 7,000 on the Penryn River **Penryn railway station, a station on the Maritime Line between Truro and Falmouth Docks, and serves the town of Penryn, Cornwall ** Penryn Campus is a university campus in Penryn, Cornwall * Penryn (UK Parliament constituency) a former constituency based on Penryn, Cornwall * Penryn RFC, an English and Cornish rugby union club based in the town of the same name *Penryn, California, in the United States, a town of 831, and home to a granite quarry * Penryn (microarchitecture), code name for a CPU core from Intel, used in Core 2 Duo *Penryn (microprocessor), code name for a microprocessor die from Intel, used in mobile Core 2 Duo Penrhyn is a Welsh word meaning 'headland' that may refer to: *Penrhyn, Anglesey, a village in Anglesey, North Wales * Baron Penrhyn, a title of peerage *Penrhyn Bay, a small town on the North Wales coast * Penrhyn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abersoch
Abersoch is a village in the community of Llanengan in Gwynedd, Wales. It is a popular coastal seaside resort, with around 800 residents, on the east-facing south coast of the Llŷn Peninsula at the southern terminus of the A499. It is about south-west of Pwllheli and south-west of the county town of Caernarfon. The village takes its name from the river Soch, which reaches the sea in the village. 'Aber' meaning 'estuary', gives us a literal translation of the 'Soch Estuary'. Archaeology In the dry summer of 2018, aerial photography at Fach Farm, some 1100 metres north of the bridge over the Afon Soch, identified crop marks that were reported as a possible Roman fortlet. High-resolution geophysics in 2019 revealed evidence of a complex defended enclosure, unlike Roman military structures but suggesting a pre-Roman date. Tourism Built upon the fishing trade, Abersoch was once a small village which grew exponentially after the 1950's with the rise of tourism. The fishing port ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manganese Mines In The United Kingdom
Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels. It improves strength, workability, and resistance to wear. Manganese oxide is used as an oxidising agent; as a rubber additive; and in glass making, fertilisers, and ceramics. Manganese sulfate can be used as a fungicide. Manganese is also an essential human dietary element, important in macronutrient metabolism, bone formation, and free radical defense systems. It is a critical component in dozens of proteins and enzymes. It is found mostly in the bones, but also the liver, kidneys, and brain. In the human brain, the manganese is bound to manganese metalloproteins, most notably glutamine synthetase in astrocytes. Manganese was first isolated in 1774. It is familiar in the laboratory in the form of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Mines In Wales
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable metallic form ( native metals). This led to very early human use in several regions, from circa 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, circa 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create bronze, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead Mines In Wales
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the group, lea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Former Mines In Gwynedd
A former is an object, such as a template, gauge or cutting die, which is used to form something such as a boat's hull. Typically, a former gives shape to a structure that may have complex curvature. A former may become an integral part of the finished structure, as in an aircraft fuselage, or it may be removable, being using in the construction process and then discarded or re-used. Aircraft formers Formers are used in the construction of aircraft fuselage, of which a typical fuselage has a series from the nose to the empennage, typically perpendicular to the longitudinal axis of the aircraft. The primary purpose of formers is to establish the shape of the fuselage and reduce the column length of stringers to prevent instability. Formers are typically attached to longerons, which support the skin of the aircraft. The "former-and-longeron" technique (also called stations and stringers) was adopted from boat construction, and was typical of light aircraft built until the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron
Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in front of oxygen (32.1% and 30.1%, respectively), forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. In its metallic state, iron is rare in the Earth's crust, limited mainly to deposition by meteorites. Iron ores, by contrast, are among the most abundant in the Earth's crust, although extracting usable metal from them requires kilns or furnaces capable of reaching or higher, about higher than that required to smelt copper. Humans started to master that process in Eurasia during the 2nd millennium BCE and the use of iron tools and weapons began to displace copper alloys, in some regions, only around 1200 BCE. That event is considered the transition from the Bronze Age to the Iron A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc 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.The elements are from different metal groups. See periodic table. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur in nature in a directly usable metallic form ( native metals). This led to very early human use in several regions, from circa 8000 BC. Thousands of years later, it was the first metal to be smelted from sulfide ores, circa 5000 BC; the first metal to be cast into a shape in a mold, c. 4000 BC; and the first metal to be purposely alloyed with another metal, tin, to create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manganese
Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels. It improves strength, workability, and resistance to wear. Manganese oxide is used as an oxidising agent; as a rubber additive; and in glass making, fertilisers, and ceramics. Manganese sulfate can be used as a fungicide. Manganese is also an essential human dietary element, important in macronutrient metabolism, bone formation, and free radical defense systems. It is a critical component in dozens of proteins and enzymes. It is found mostly in the bones, but also the liver, kidneys, and brain. In the human brain, the manganese is bound to manganese metalloproteins, most notably glutamine synthetase in astrocytes. Manganese was first isolated in 1774. It is familiar in the laboratory in the form of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cottage
A cottage, during Feudalism in England, England's feudal period, was the holding by a cottager (known as a Cotter (farmer), cotter or ''bordar'') of a small house with enough garden to feed a family and in return for the cottage, the cottager had to provide some form of service to the Lord of the manor, manorial lord.Daniel D. McGarry, ''Medieval history and civilization'' (1976) p 242 However, in time cottage just became the general term for a small house. In modern usage, a cottage is usually a modest, often cosy dwelling, typically in a rural or semi-rural location and not necessarily in England. The cottage orné, often quite large and grand residences built by the nobility, dates back to a movement of "rustic" stylised cottages of the late 18th and early 19th century during the Romantic movement. In British English the term now denotes a small dwelling of traditional build, although it can also be applied to modern construction designed to resemble traditional houses ("wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
