hydraulic conveyor

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• Conveyor system — Conveyor redirects here. For other uses, see Conveyor (disambiguation). This article is about conveyor systems. For information on conveyor belts, see conveyor belts. For information on overhead conveyors, see overhead conveyors. An overhead… …   Wikipedia

• coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …   Universalium

• Elevator — For other uses, see Elevator (disambiguation). A set of lifts in the lower level of a London Underground station. The arrows indicate each elevator s position and direction of travel …   Wikipedia

• mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

• tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

• Drum Motor — A Drum Motor (sometimes referred to as a motorised pulley) is in simplistic terms a highly efficient geared motor drive enclosed within a steel shell providing a single component driving pulley for conveyor belts. Drum Motor with Planitory Gear …   Wikipedia

• MythBusters (2008 season) — Country of origin Australia United States No. of episodes 20 (includes 8 specials) Broadcast Original channel Discovery Channel …   Wikipedia

• Longwall mining — is a form of underground coal mining where a long wall (typically about 250 400 m long) of coal is mined in a single slice (typically 1 2 m thick). The longwall panel (the block of coal that is being mined) is typically 3 4 km long and 250 400 m… …   Wikipedia

• Drilling fluid — This article is about fluids used when drilling a well. For fluids used with drill bits during metal working, see cutting fluid. Driller pouring a foaming agent down the rod string on a drilling rig In geotechnical engineering, drilling fluid is… …   Wikipedia

• Reciprocating screw machinery — is used for the extrusion blow molding of hollow containers. Examples of parts manufactured from these machines include lightweight HDPE bottles for dairy and water, as well as large 3 5 gallon polycarbonate bottles for water coolers. Description …   Wikipedia

• Live bottom trailer — A live bottom trailer is a semi trailer used for hauling loose material such as asphalt, grain, potatoes, sand and gravel. A live bottom trailer is the alternative to a dump truckor an end dumptrailer. The typical live bottom trailer has a… …   Wikipedia