Q28
Which one is a non-entry mining method?
A.
Cut and Fill
B.
Sublevel Stoping
C.
Room and Pillar
D.
In-situ leaching
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
In-situ leaching involves extracting minerals by dissolving them underground.The correct answer is: In-situ leachingNo physical entry is required into the ore zone.Used for soluble minerals like uranium or copper.