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winning heading

A development heading off which oblique headings and conveyor panels are formed and worked (longwall); any of the development drivages in the solid coal, about 15 yd (13.7 m) apart, and of which bords and pillars are formed (pillar method of working).

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Creador

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 puntos
  • 100% positive feedback
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