augering plant

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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
Auger — An auger is a device for moving material or liquid (see Archimedes screw) by means of a rotating helical flighting. The material is moved along the axis of rotation. For some uses the helical flighting is enclosed in a tube, for other uses the… … Wikipedia
Surface mining — is a type of mining in which soil and rock overlying the mineral deposit are removed. It is the opposite of underground mining, in which the overlying rock is left in place, and the mineral removed through shafts or tunnels. Surface mining is… … Wikipedia
auger — /aw geuhr/, n. 1. Carpentry. a. a bit, as for a brace. b. a boring tool, similar to but larger than a gimlet, consisting of a bit rotated by a transverse handle. 2. See earth auger. 3. a device consisting of a shaft with a broad helical flange… … Universalium

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