Which factor most affects the stability of underground openings?
A. Mine depth
B. Rock strength
C. Lighting quality
D. Number of workers
Answer: Option B
Solution (By Examveda Team)
Rock strength is a primary determinant of how stable an opening will be.The correct answer is: Rock strengthStronger rocks can support wider spans and deeper development.Measured through RQD and UCS tests.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
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