Which of the following stoping methods uses vertical crater retreat blasting?
A. Sublevel caving
B. VCR mining
C. Cut and fill
D. Room and pillar
Answer: Option B
Solution (By Examveda Team)
VCR (Vertical Crater Retreat) uses downward drilling and crater blasting.The correct answer is: VCR miningEffective in competent ore with a vertical geometry.Allows safe remote drilling and blasting.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
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