- coal auger
- сверло по углю
English-Russian mining dictionary. В.П. Манышев.
coal auger
Смотреть что такое "coal auger" в других словарях:
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
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
auger mining — ▪ coal mining method for recovering coal (coal mining) by boring into a coal seam at the base of strata exposed by excavation. Normally one of the lowest cost techniques of mining, it is limited to horizontal or slightly pitched seams that… … Universalium
Auger mine — A surface mine in which the coal bed is removed by means of a large diameter drill. Usually operated only when the overburden becomes too thick for economical strip mining. U.S. Dept. of Energy, Energy Information Administration s Energy… … Energy terms
Bituminous Coal Strike of 1977–1978 — The Bituminous Coal Strike of 1977–1978 was a 110 day national coal strike in the United States led by the United Mine Workers of America, AFL CIO. It began December 6, 1977, and ended on March 19, 1978. It is generally considered a successful… … Wikipedia
History of coal mining — Due to its abundance, coal has been mined in various parts of the world throughout history and continues to be an important economic activity today. Compared to wood fuels, coal yields a higher amount of energy per mass and could be obtained in… … Wikipedia
breast auger — noun : an auger for soft rock or coal that is advanced under pressure from the miner s chest or breast compare breast drill … Useful english dictionary
Surface mining methods — Auger mining recovers coal through the use of a large diameter drill driven into a coalbed in the side of a surface mine pit. It usually follows contour surface mining, particularly when the overburden is too costly to excavate. Area mining… … Energy terms
Underground mining equipment — A coal cutting machine is used in conventional mining to undercut, top cut, or shear the coal face so that coal can be fractured easily when blasted. It cuts 9 to 13 feet into the bed. Continuous auger machine is used in mining coalbeds less… … Energy terms
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
List of pipeline accidents — The following is a list of pipeline accidents: This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. Contents 1 Bel … Wikipedia
