首页 >  Term: precutting
precutting

Method used in machine mining where a coal cutter makes a cut along the face in front of a cutter loader. It may be adopted in hard coal seams or where an improvement in the +2-in (+5.1-cm) coal product is required.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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