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Geiseltalsee
Geiseltalsee, literally Geisel valley lake, is at about the largest artificial lake by area in Germany. Once flooding of the Cottbuser Ostsee is complete it will surpass Geiseltalsee in surface area, covering . Geiseltalsee lies in the Saalekreis district of the state Saxony-Anhalt. The lake was created in 2003-11 by flooding a former opencast lignite mine in the Geiseltal (Geisel valley); the name of that valley had become widely known due to the notable fossil record which emerged from that coal mine. Dimensions At surface area it is the largest artificial lake in Germany by surface area until Cottbuser Ostsee reaches its planned final size of . Containing some of water it is far more voluminous than Cotbusser Ostsee will be (planned to have a volume of once flooding is complete) and also exceeds Germany's most voluminous reservoir, Bleilochtalsperre, by about a 2:1 margin (volume of Bleilochtalsperre being roughly ). At a maximum depth of it is the sixth deepest lake of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geisel Valley
The Geisel valley () is a valley in Saxony-Anhalt, Germany, situated west of Merseburg, Saalekreis district. It is named after the River Geisel which rises in Mücheln and is a tributary of the Saale, just under long. Its main settlements are Braunsbedra and Mücheln, which in the future will merge into the 'collective municipality' of ''Geiseltal''. The Geisel valley was quarried for coal from 1698 until the mines were closed in 1994; The mining of brown coal is first attested for 1698 near the Zöbigker grove but is most likely to be older. Initially, only twelve smaller pits emerged at the beginning of the Industrial Revolution in the late 19th century, which spread to large areas; ultimately, the Braunsbedra-Geiseltal mines became one of the largest connected mining regions in Germany. Coal/Lignite mining At the beginning of the twentieth century, the region was characterized by mostly independent pits (Elisabeth 1906, Großkayna 1907, Beuna 1907, Cecilie 1907, Rheinland 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central German Lake District
The Central German Lake District (''German:'' Mitteldeutsches Seenland) is a group of artificial lakes that are the result of extensive open pit lignite mining. The area around Leipzig Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Ge ... is sometimes separately marketed as the "Leipzig Lake District" (''German:'' Leipziger Seenland) or the Neuseenland. The Lausitzer und Mitteldeutsche Bergbauverwaltungsgesellschaft is in charge of the technological side of the area. List of lakes See also * Leipzig River Network * Lusatian Lake District - of similar origins References {{reflist Artificial lakes of Germany Regions of Saxony Mining in Germany Mining in Saxony ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cottbuser Ostsee
The Cottbuser Ostsee (Cottbus Eastern Lake; ) is an artificial lake under development on the grounds of the former open-pit lignite mine :de:Tagebau Cottbus Nord near Cottbus, Brandenburg, Germany. Dimensions When complete, it is to cover a surface area of , making it one of the biggest artificial lakes in the country. At a maximum depth of and an average depth of between and the lake is to have a total water volume of once flooding is complete. Until the lake is complete, the biggest artificial lake in Germany by surface area (likewise created by conversion of a former lignite mine) is Geiseltalsee which covers some . However, the water volume of Geiseltalsee is almost three times larger at . For comparison, Germany's largest lake, Lake Constance, covers at a depth of up to and contains some of water. The largest reservoir (i.e. an artificial lake created via a dam) in Germany by surface area is Forggensee in Bavaria with a surface area of and a maximum water volume of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saalekreis
Saalekreis is a district in Saxony-Anhalt, Germany. The district seat is Merseburg. Its area is . It is bounded by (from the west and clockwise) the districts Kyffhäuserkreis (Thuringia), Mansfeld-Südharz, Salzlandkreis, Anhalt-Bitterfeld, Nordsachsen, Leipzig (both Saxony) and Burgenlandkreis Burgenlandkreis () is a district in Saxony-Anhalt, Germany. Its area is . History The district was established as Landkreis Burgenland by the merger of the former Burgenlandkreis and Landkreis Weißenfels as part of the reform of 2007. .... The district-free city of Halle is surrounded by the Saalekreis. History The district was established by merging the former districts of Merseburg-Querfurt and Saalkreis as part of the district reform of 2007. Towns and municipalities The district Saalekreis consists of the following subdivisions: References {{Saalekreis-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Power Plant
A thermal power station, also known as a thermal power plant, is a type of power station in which the heat energy generated from various fuel sources (e.g., coal, natural gas, nuclear fuel, etc.) is converted to electrical energy. The heat from the source is converted into mechanical energy using a thermodynamic power cycle (such as a Diesel cycle, Rankine cycle, Brayton cycle, etc.). The most common cycle involves a working fluid (often water) heated and boiled under high pressure in a pressure vessel to produce high-pressure steam. This high pressure-steam is then directed to a turbine, where it rotates the turbine's blades. The rotating turbine is mechanically connected to an electric generator which converts rotary motion into electricity. Fuels such as natural gas or oil can also be burnt directly in gas turbines ( internal combustion), skipping the steam generation step. These plants can be of the open cycle or the more efficient combined cycle type. The majorit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Nuclear Program
The Soviet atomic bomb project was authorized by Joseph Stalin in the Soviet Union to develop nuclear weapons during and after World War II. Russian physicist Georgy Flyorov suspected that the Allies of World War II, Allied powers were secretly developing a "Weapon of mass destruction, superweapon" since 1939. Flyorov urged Stalin to start a nuclear program in 1942. Early efforts mostly consisted of research at Kurchatov Institute, Laboratory No. 2 in Moscow, and intelligence gathering of Soviet-sympathizing atomic spies in the US Manhattan Project. Subsequent efforts involved plutonium production at Mayak in Chelyabinsk Oblast, Chelyabinsk and weapon research and assembly at KB-11 in Sarov. After Stalin learned of the atomic bombings of Hiroshima and Nagasaki, the nuclear program was accelerated through intelligence gathering about the Manhattan Project and German nuclear weapon project. Espionage coups, especially via Klaus Fuchs and David Greenglass, included detailed descripti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuna
Leuna () is a town in Saxony-Anhalt, eastern Germany, south of Merseburg and Halle, Saxony-Anhalt, Halle, on the river Saale. The town is known for the ''Leuna works, Leunawerke'', at 13 km2 one of the biggest chemical industrial complexes in Germany, where a very wide range of chemicals and plastics is produced. In 1960, Leuna's population was nearly 10,000, but after German reunification, reunification high unemployment rates and poor living conditions, including pollution from nearby industries, caused significant outward migration. Before the 31 December 2009 incorporation of ten neighbouring municipalities, its population had declined to 6,670. Geography The town Leuna consists of Leuna proper and the following 10 ''Ortschaften'' or municipal divisions:Hauptsatzung der Stadt Leun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuna Works
The Leuna works () in Leuna, Saxony-Anhalt, is one of the biggest chemical industrial complexes in Germany. The site, now owned jointly by companies such as TotalEnergies, BASF, Linde plc, and DOMO Group, covers 13 km2 and produces a very wide range of chemicals and plastics. Origins Ammonia is an important intermediate product for the manufacture of nitric acid and other nitrogen compounds, needed to produce fertilizers and explosives in particular. The increasing demand for explosives during World War I exceeded the ammonia production capacities of the Oppau works of BASF, who owned the patents for the Haber process. Leuna in central Germany, out of range of French aircraft, was selected as the location of a second plant named ''Badische Anilin- und Sodafabrik, Ammoniakwerk Merseburg''. Construction started on 25 May 1916, and the first tank car with ammonia left the works in April 1917. In 1920, the ammonia works of Leuna and Oppau merged into ''Ammoniakwerke Merseburg- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Briquettes
A briquette (; also spelled briquet) is a compressed block of coal dust or other combustible biomass material (e.g. charcoal, sawdust, wood chips, peat, or paper) used for fuel and kindling to start a fire. The term is a diminutive derived from the French word ''brique'', meaning brick. Coal briquettes Coal briquettes have long been produced as a means of using up 'small coal', the finely broken coal inevitably produced during the mining process. Otherwise this is difficult to burn as it is hard to arrange adequate airflow through a fire of these small pieces; also such fuel tends to be drawn up and out of the chimney by the draught, giving visible black smoke. The first briquettes were known as culm bombs and were hand-moulded with a little wet clay as a binder. These could be difficult to burn efficiently, as the unburned clay produced a large ash content, blocking airflow through a grate. With Victorian developments in engineering, particularly the hydraulic press, it b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruhr Area
The Ruhr ( ; , also ''Ruhrpott'' ), also referred to as the Ruhr Area, sometimes Ruhr District, Ruhr Region, or Ruhr Valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 1,160/km2 and a population of over 5 million (2017), it is the largest urban area in Germany and the third of the European Union. It consists of several large cities bordered by the rivers Ruhr to the south, Rhine to the west, and Lippe to the north. In the southwest it borders the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan region of more than 10 million people, which is the third largest in Western Europe, behind only London and Paris. The Ruhr cities are, from west to east: Duisburg, Oberhausen, Bottrop, Mülheim an der Ruhr, Essen, Gelsenkirchen, Bochum, Herne, Hagen, Dortmund, Hamm and the districts of Wesel, Recklinghausen, Unna and Ennepe-Ruhr-Kreis. The most populous cities are Dortmund (with a population of app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coal Liquefaction
Coal liquefaction is a process of converting coal into liquid hydrocarbons: liquid fuels and petrochemicals. This process is often known as "coal to X" or "carbon to X", where X can be many different hydrocarbon-based products. However, the most common process chain is "coal to liquid fuels" (CTL). Historical background Coal liquefactions originally was developed at the beginning of the 20th century. The best-known CTL process is Fischer–Tropsch synthesis (FT), named after the inventors Franz Joseph Emil Fischer, Franz Fischer and Hans Tropsch from the Kaiser Wilhelm Institute in the 1920s. The FT synthesis is the basis for indirect coal liquefaction (ICL) technology. Friedrich Bergius, also a German chemist, invented direct coal liquefaction (DCL) as a way to convert lignite into synthetic oil in 1913. Coal liquefaction was an important part of Adolf Hitler's four-year plan of 1936, and became an integral part of German industry during World War II. During the mid-1930s, compan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Currency
In macroeconomics, hard currency, safe-haven currency, or strong currency is any globally traded currency that serves as a reliable and stable store of value. Factors contributing to a currency's ''hard'' status might include the stability and reliability of the respective state's legal and bureaucratic institutions, level of corruption, long-term stability of its purchasing power, the associated country's political and fiscal condition and outlook, and the policy posture of the issuing central bank. Safe haven currency is defined as a currency which behaves like a hedge for a reference portfolio of risky assets conditional on movements in global risk aversion. Conversely, a weak or soft currency is one which is expected to fluctuate erratically or depreciate against other currencies. Softness is typically the result of weak legal institutions and/or political or fiscal instability. Junk currency is even less trusted than soft currency, and has a very low currency value. Soft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
