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Glasebacher Teich
The Glasebacher Teich was an artificial reservoir or '' Kunstteich'' laid out near the village of Straßberg in the Harz Mountains of Germany for mining purposes. With a capacity of about 300,000 m³ it was the second largest pond in the Lower Harz. It impounded the Glasebach stream. History The pond was a water reservoir to supply water power for mining and smelting. The water was used to power mine shafts, stamp mills, water mills and smelteries. The pond was laid in 1716 under the direction of mining director (''Bergwerksdirektor''), Christian Zacharias Koch. Due to a storm, the dam broke in 1752, after which the sluice valve and drainage outlet (''Striegelanlage'') could no longer be operated. The deluge of water released by the dam break destroyed the Bärloch Mill ('' Bärlochsmühle'') at the end of the valley. The surviving section of the dam belongs today to the heritage area known as the Lower Harz Pond and Ditch System Within the Lower Harz region (in the count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landkreis Harz
Harz is a district in Saxony-Anhalt, Germany. Its area is . History The district was established by merging the former districts of Halberstadt (district), Halberstadt, Wernigerode (district), Wernigerode and Quedlinburg (district), Quedlinburg as well as the city of Falkenstein, Saxony-Anhalt, Falkenstein (from the district of Aschersleben-Staßfurt) as part of the Kreisreform Sachsen-Anhalt 2007, reform of 2007. Towns and municipalities The district Harz consists of the following subdivisions: See also *Ilsenburg (Verwaltungsgemeinschaft) References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Mill
A watermill or water mill is a mill that uses hydropower. It is a structure that uses a water wheel or water turbine to drive a mechanical process such as milling (grinding), rolling, or hammering. Such processes are needed in the production of many material goods, including flour, lumber, paper, textiles, and many metal products. These watermills may comprise gristmills, sawmills, paper mills, textile mills, hammermills, trip hammering mills, rolling mills, and wire drawing mills. One major way to classify watermills is by wheel orientation (vertical or horizontal), one powered by a vertical waterwheel through a gear mechanism, and the other equipped with a horizontal waterwheel without such a mechanism. The former type can be further subdivided, depending on where the water hits the wheel paddles, into undershot, overshot, breastshot and pitchback (backshot or reverse shot) waterwheel mills. Another way to classify water mills is by an essential trait about their loca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Former Reservoirs
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 used 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 cone 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 th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Harz Pond And Ditch System
Within the Lower Harz region (in the counties of Harz and Mansfeld-Südharz in central Germany) are still many traces of the historical water management facilities used by the mining industry. In addition to water-carrying ditches and ponds, there are also long-abandoned ditches and dry pond beds. The Lower Harz Pond and Ditch System (), which forms the major part of these old water management facilities, lies in the central Lower Harz, almost entirely within the borough of the present-day town of Harzgerode. Extent In the central Lower Harz between the villages of Neudorf, Silberhütte, Straßberg, Großem Auerberg and the upper Lude river is the only, historical, mine water management system in the Lower Harz. Sheltered by the geographical-climatic conditions of the Lower Harz, the system never reached the scale of comparable systems in the Upper Harz and the Ore Mountains. The river catchment areas affected are primarily the source regions and upper reaches of small mount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bärlochsmühle
The Bärlochsmühle is a former mill near Straßberg in the Harz mountains in Central Germany. The mill is located near the point where the Glasebach stream enters the river Selke and is linked to an iron works that was first mentioned in the records in 1467. At that time the two counts, Henry of Schwarzburg and Henry of Stolberg enfeoffed a meadow ''"bene den Strasberg nie unser Hutten"'' to the brothers Röder and von Harz, amongst others. After Straßberg was ceded to the state of Anhalt this enfeoffment In the Middle Ages, especially under the European feudal system, feoffment or enfeoffment was the deed by which a person was given land in exchange for a pledge of service. This mechanism was later used to avoid restrictions on the passage of t ... was reaffirmed in 1511 by Prince Wolfgang of Anhalt. This iron works existed until at least 1566. Furthermore, it is probably that this mill was associated closely with the village of Birnbaum that was abandoned in the 15th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dam Break
A dam failure or dam burst is a catastrophic type of structural failure characterized by the sudden, rapid, and uncontrolled release of impounded water or the likelihood of such an uncontrolled release. Between the years 2000 and 2009 more than 200 notable dam failures happened worldwide. A dam is a barrier across flowing water that obstructs, that directs or slows down the flow, often creating a reservoir, lake or impoundments. Most dams have a section called a ''spillway or weir'' over or through which water flows, either intermittently or continuously, and some have hydroelectric power generation systems installed. Dams are considered "installations containing dangerous forces" under international humanitarian law due to the massive impact of a possible destruction on the civilian population and the environment. Dam failures are comparatively rare, but can cause immense damage and loss of life when they occur. In 1975 the failure of the Banqiao Reservoir Dam and other dams i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smelteries
Smelting is a process of applying heat and a chemical reducing agent to an ore to extract a desired base metal product. It is a form of extractive metallurgy that is used to obtain many metals such as iron, copper, silver, tin, lead and zinc. Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag and leaving the metal behind. The reducing agent is commonly a fossil-fuel source of carbon, such as carbon monoxide from incomplete combustion of coke—or, in earlier times, of charcoal. The oxygen in the ore binds to carbon at high temperatures, as the chemical potential energy of the bonds in carbon dioxide () is lower than that of the bonds in the ore. Sulfide ores such as those commonly used to obtain copper, zinc or lead, are roasted before smelting in order to convert the sulfides to oxides, which are more readily reduced to the metal. Roasting heats the ore in the presence of oxygen from air, oxidizing the ore and libe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
