Q196
What is the primary use of a raise in underground mining?
A.
Material transport
B.
Ventilation and access
AnswerC.
Ore grinding
D.
Roof support
Answer: Option B
Solution
Answer: Option B
Solution:
Raise is a vertical or inclined opening connecting different levels.The correct answer is: Ventilation and accessUsed for air circulation, ore transfer, or escape routes.Often developed using raise boring or Alimak.