Q231
Which factor makes decline development more favorable than shaft sinking?
A.
High ore grade
B.
Deep ore body
C.
Small production rate
AnswerD.
Vertical ore deposit
Answer: Option C
Solution
Answer: Option C
Solution:
Declines are cost-effective for shallow to moderate depths and smaller outputs.The correct answer is: Small production rateCheaper to build and allows rubber-tired vehicle access.Ideal when quick access is needed.