Q152
What is the purpose of "slot drilling" in longhole stoping?
A.
Drain groundwater
B.
Install support
C.
Initiate ore breakage
AnswerD.
Pump explosives
Answer: Option C
Solution
Answer: Option C
Solution:
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.