What is the purpose of "slot drilling" in longhole stoping?
A. Drain groundwater
B. Install support
C. Initiate ore breakage
D. Pump explosives
Answer: Option C
Solution (By Examveda Team)
Slot drilling creates a void or relief area to initiate blast-induced rock breakage.The correct answer is: Initiate ore breakageWithout a slot, blasting is ineffective due to confinement.Slots are essential for fragmentation.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
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