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 Glossary

Energy terms . 2014.

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  • Surface mine —   A coal producing mine that is usually within a few hundred feet of the surface. Earth above or around the coal (overburden) is removed to expose the coalbed, which is then mined with surface excavation equipment, such as draglines, powers… …   Energy terms

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  • bore — I (New American Roget s College Thesaurus) n. diameter, caliber; nuisance. v. drill, pierce; tire, weary, annoy. See breadth, weariness, opening. Ant., amuse. II (Roget s IV) n. Syn. nuisance, pest, tiresome person, tedious person, drag*; see… …   English dictionary for students

  • bore — I v pierce, perforate, puncture, ream, trepan, riddle; penetrate, open up, reach into, tap, broach; drill, auger, mine, tunnel, burrow, lower into; cut out, dig out, gouge out; drive, punch, force, work; stab, pink, sink, stick, prick. II v 1.… …   A Note on the Style of the synonym finder

  • 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

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  • 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

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