>  Term: foreshaft sinking
foreshaft sinking

The first 150 ft (46 m) or so of shaft sinking from the surface, during which time the plant and services for the main shaft sinking are installed. Sometimes, the main sinking contract does not commence until the foreshaft has been completed.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 포인트
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