Q129
What is the key factor in choosing between vertical crater retreat and sublevel stoping?
A.
Water table depth
B.
Orebody geometry and height
AnswerC.
Drill diameter
D.
Diesel equipment type
Answer: Option B
Solution
Answer: Option B
Solution:
Vertical Crater Retreat (VCR) and Sublevel stoping differ in layout and fragmentation.The correct answer is: Orebody geometry and heightVCR is good for tall, steep bodies; sublevel stoping for medium height.Geometry directly affects method suitability.