The pilot hole is reamed from lower level to upper level called . . . . . . . .
A. Down reaming
B. Up reaming
C. Middle reaming
D. None
Answer: Option B
This Question Belongs to Mining Engineering >> Metal Mining
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The ore loaded in shrinkage stoping by . . . . . . . .
A. Over head mucker
B. Pneumatic Auto Loader
C. LHD
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If the ore body is thicker, the level interval will be . . . . . . . .
A. More
B. Lessor
C. Stronger
D. Weaker
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