What is a typical application of raise boring?
A. Shaft collaring
B. Developing inclined haul roads
C. Creating smooth vertical holes
D. Ore fragmentation
Answer: Option C
Solution (By Examveda Team)
Raise boring drills a small pilot hole, then enlarges it to full diameter.The correct answer is: Creating smooth vertical holesUsed for ventilation shafts, ore passes, and service holes.Safer and faster than conventional raises.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
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