Q236
Which of the following stoping methods uses vertical crater retreat blasting?
A.
Sublevel caving
B.
VCR mining
AnswerC.
Cut and fill
D.
Room and pillar
Answer: Option B
Solution
Answer: Option B
Solution:
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.