ホーム > Term: lifter holes
lifter holes
Shotholes drilled along the floor of a tunnel for lifting the rock to floor level. They are fired after the cut holes, or by delay detonators in the round.
- スピーチの一部 noun
- 産業/ドメイン 炭鉱
- カテゴリ 炭鉱全般; Mineral mining
- Government Agency: USBM
0
作成者
- ed.young
-
(V.I.P) 21084 ポイント - 100% positive feedback
(Milwaukee, United States)
