首页 >  Term: rock-dust zone
rock-dust zone

A section of a mine entry, the ribs, roof, and floor of which have been coated with rock dust.

0 0

创建者

  • ed.young
  • (Milwaukee, United States)

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