你即將離開本站

並前往https://www.stolajohannes.cz/en/adit/mining-technique.html

Mining technique | stolajohannes.cz - Štola Johannes

... encompassed the use of underhand stoping (horizontal cut) or overhand stoping. ... mineral veins were mined using the underhand and overhand techniques.

確定！ 回上一頁

查詢 「overhand stoping」的人也找了：

  1. breast stoping
    2.
  2. stoping mining
    3.
  3. shrinkage stoping
    4.
  4. square-set stoping
    5.
  5. underground stope
    6.
  6. open stope mining
    7.
  7. underhand stoping
    8.
  8. overhand cut and fill mining method
    9.