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Stolberger Zink
Stolberg Zinc joint-stock company for mining and smelter operations in Aachen (Stolberger Zink-AG für Bergbau und Hüttenbetrieb Aachen), or Stolberg Zinc Mines GmbH (Stolberger Zink Bergwerke GmbH ), is a metal mining concern in the Aachen region and specifically in the area of Eschweiler-Stolberg, with headquarters in Stolberg. Stolberg Zinc is the latest offshoot of a long line of metallurgical enterprises in Stolberg. It originated in 1938 with a name change from the Company for Mining, Lead and Zinc Production at Stolberg (French: Société anonyme des mines et des fonderies de zinc de Stolberg) - Stolberger Gesellschaft (Stolberg Company) for short. Besides the Nievenheim zinc smelter at Dormagen there was their main zinc operation, the Münsterbusch zinc smelter, which was in operation until 1967, and the Binsfeldhammer lead smelter, which was acquired in 1970 by the Berzelius Duisburg company. Since then, it is primarily engaged in the management of properties, such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stolberger Zink (5)
Stolberg Zinc joint-stock company for mining and smelter operations in Aachen (Stolberger Zink-AG für Bergbau und Hüttenbetrieb Aachen), or Stolberg Zinc Mines GmbH (Stolberger Zink Bergwerke GmbH ), is a metal mining concern in the Aachen region and specifically in the area of Eschweiler-Stolberg, with headquarters in Stolberg. Stolberg Zinc is the latest offshoot of a long line of metallurgical enterprises in Stolberg. It originated in 1938 with a name change from the Company for Mining, Lead and Zinc Production at Stolberg (French: Société anonyme des mines et des fonderies de zinc de Stolberg) - Stolberger Gesellschaft (Stolberg Company) for short. Besides the Nievenheim zinc smelter at Dormagen there was their main zinc operation, the Münsterbusch zinc smelter, which was in operation until 1967, and the Binsfeldhammer lead smelter, which was acquired in 1970 by the Berzelius Duisburg company. Since then, it is primarily engaged in the management of properties, such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wiesloch
Wiesloch (, locally ; South Franconian: ''Wissloch''), is a town in northern Baden-Württemberg, Germany. It is situated 13 kilometres south of Heidelberg. After Weinheim, Sinsheim and Leimen it is the fourth largest town in the Rhein-Neckar-Kreis. It shares Wiesloch-Walldorf station with its neighbouring town Walldorf. Also in the vicinity of Wiesloch are Dielheim, Malsch (bei Wiesloch), Mühlhausen, Rauenberg and Sankt Leon-Rot. Wiesloch's population grew to more than 20,000 when the administration of the area was reorganised in the 1970s. Wiesloch became a ''Große Kreisstadt'' on 1 January 1973, when Altwiesloch, Baiertal, Frauenweiler and Schatthausen were amalgamated with Wiesloch to form the present municipality. History The settlement that is now Wiesloch town centre originated during the expansion of silver mining in the vicinity in the 10th century. Fossil site The fossil remains of the oldest hummingbird found to date, ''Eurotrochilus inexpectatus'', were found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Companies Based In North Rhine-Westphalia
A company, abbreviated as co., is a legal entity representing an association of people, whether natural, legal or a mixture of both, with a specific objective. Company members share a common purpose and unite to achieve specific, declared goals. Companies take various forms, such as: * voluntary associations, which may include nonprofit organizations * business entities, whose aim is generating profit * financial entities and banks * programs or educational institutions A company can be created as a legal person so that the company itself has limited liability as members perform or fail to discharge their duty according to the publicly declared incorporation, or published policy. When a company closes, it may need to be liquidated to avoid further legal obligations. Companies may associate and collectively register themselves as new companies; the resulting entities are often known as corporate groups. Meanings and definitions A company can be defined as an "artificial per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining Companies Of Germany
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the economic viability of investing in the equipment, labor, and energy required to extract, refine and transport the materials found at the mine to manufacturers who can use the material. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Sulfide
Zinc sulfide (or zinc sulphide) is an inorganic compound with the chemical formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite. Although this mineral is usually black because of various impurities, the pure material is white, and it is widely used as a pigment. In its dense synthetic form, zinc sulfide can be transparent, and it is used as a window for visible optics and infrared optics. Structure ZnS exists in two main crystalline forms. This dualism is an example of polymorphism. In each form, the coordination geometry at Zn and S is tetrahedral. The more stable cubic form is known also as zinc blende or sphalerite. The hexagonal form is known as the mineral wurtzite, although it also can be produced synthetically.. The transition from the sphalerite form to the wurtzite form occurs at around 1020 °C. A tetragonal form is also known as the very rare mineral called polhemusite, with the formula . Applicatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Oxide
Zinc oxide is an inorganic compound with the formula . It is a white powder that is insoluble in water. ZnO is used as an additive in numerous materials and products including cosmetics, food supplements, rubbers, plastics, ceramics, glass, cement, lubricants, paints, ointments, adhesives, sealants, pigments, foods, batteries, ferrites, fire retardants, and first-aid tapes. Although it occurs naturally as the mineral zincite, most zinc oxide is produced synthetically. ZnO is a wide-band gap semiconductor of the II-VI semiconductor group. The native doping of the semiconductor due to oxygen vacancies or zinc interstitials is n-type. Other favorable properties include good transparency, high electron mobility, wide band gap, and strong room-temperature luminescence. Those properties make ZnO valuable for a variety of emerging applications: transparent electrodes in liquid crystal displays, energy-saving or heat-protecting windows, and electronics as thin-film transistors and lig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mill (grinding)
A mill is a device, often a structure, machine or kitchen appliance, that breaks solid materials into smaller pieces by grinding, crushing, or cutting. Such comminution is an important unit operation in many processes. There are many different types of mills and many types of materials processed in them. Historically mills were powered by hand or by animals (e.g., via a hand crank), working animal (e.g., horse mill), wind (windmill) or water (watermill). In modern era, they are usually powered by electricity. The grinding of solid materials occurs through mechanical forces that break up the structure by overcoming the interior bonding forces. After the grinding the state of the solid is changed: the grain size, the grain size disposition and the grain shape. Milling also refers to the process of breaking down, separating, sizing, or classifying aggregate material (e.g. mining ore). For instance rock crushing or grinding to produce uniform aggregate size for construction purp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arsenic
Arsenic is a chemical element with the symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, but only the gray form, which has a metallic appearance, is important to industry. The primary use of arsenic is in alloys of lead (for example, in car batteries and ammunition). Arsenic is a common n-type dopant in semiconductor electronic devices. It is also a component of the III-V compound semiconductor gallium arsenide. Arsenic and its compounds, especially the trioxide, are used in the production of pesticides, treated wood products, herbicides, and insecticides. These applications are declining with the increasing recognition of the toxicity of arsenic and its compounds. A few species of bacteria are able to use arsenic compounds as respiratory metabolites. Trace quantities of arsenic are an essential dietary element in rats, ham ... [...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] |
Schauinsland Pit
The Schauinsland Pit (german: Grube Schauinsland, or ''Erzkasten'' in the 19th century) was a silver and lead mine east of Freiburg im Breisgau. From the 19th century zinc was also mined. The mine operated from the 13th century until 1954. Since 1997 Schauinsland Pit has been a show mine. Geology The pit lies in the southern part of the Central Black Forest, immediately south of the 1,284-metre-high peak of Schauinsland. There are numerous lodes which descend very steeply from east to west and run largely parallel to the Upper Rhine Graben. The lodes are formed from quartz, baryte and carbonate and contain exploitable quantities of zincblende and galena. The host rocks are gneisses and migmatites. The exploitable main lodes lie within an area 1.7 km wide and 3.4 km long around the summit of the Schauinsland. Mining has been carried out at up to 900 metres deep.Werner, Dennert, 2004, pp. 248 ff. Literature * Wolfgang Werner, Volker Dennert: ''Lagerstätten und Berg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schwarzwald
The Black Forest (german: Schwarzwald ) is a large forested mountain range in the state of Baden-Württemberg in southwest Germany, bounded by the Rhine Valley to the west and south and close to the borders with France and Switzerland. It is the source of the Danube and Neckar rivers. Its highest peak is the Feldberg with an elevation of above sea level. Roughly oblong in shape, with a length of and breadth of up to , it has an area of about 6,009 km2 (2,320 sq mi). Historically, the area was known for forestry and the mining of ore deposits, but tourism has now become the primary industry, accounting for around 300,000 jobs. There are several ruined military fortifications dating back to the 17th century. History In ancient times, the Black Forest was known as , after the Celtic deity, Abnoba. In Roman times (Late antiquity), it was given the name ("Marcynian Forest", from the Germanic word ''marka'' = "border"). The Black Forest probably represented the bord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
