Home >  Term: drop staple
drop staple

Eng. An interior shaft, connecting an upper and lower seam, through which coal is raised or lowered.

0 0

Kūrėjas

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 points
  • 100% positive feedback
© 2024 CSOFT International, Ltd.