The following is not considered under unsupported class of u/g mining method for extraction.
A. Stope and pillar
B. Shrinkage
C. Sub level
D. Square set
Answer: Option D
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
D. None
If the ore body is thicker, the level interval will be . . . . . . . .
A. More
B. Lessor
C. Stronger
D. Weaker
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