- shearer longwall face
- 长壁工祖
English-Chinese dictionary of mining (英汉矿业大词典). 2013.
shearer longwall face
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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
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
Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo … Wikipedia
Underground mining (soft rock) — refers to a group of underground mining techniques used to extract coal, oil shale and other minerals or geological materials from sedimentary ( soft ) rocks. Because deposits in sedimentary rocks are commonly layered and relatively less hard,… … Wikipedia
Joy Mining Machinery — Infobox Company company name = Joy Mining Machinery company company type = Subsidiary (Parent: Joy Global) foundation = Incorporated in 1919 company slogan = [World s Leading Manufacturer of Underground Mining Equipment] location = Warrendale,… … Wikipedia
Frickley Colliery — Frickley South Elmsall Colliery was opened by the Carlton Main Colliery Company Ltd in 1903 in South Emsall, in Yorkshire, England.Frickley South Elmsall Colliery The first sod was cut on 23 April 1903 of shafts No.1 and No.2 and the Barnsley Bed … Wikipedia
