Q54
In which mining method is "room and pillar" primarily used?
A.
Salt and potash mining
AnswerB.
Gold vein mining
C.
Steep ore mining
D.
Copper heap leaching
Answer: Option A
Solution
Answer: Option A
Solution:
Room and pillar is used in flat-bedded deposits like salt, coal, and potash.The correct answer is: Salt and potash miningRooms are mined, and pillars are left to support the roof.Not suitable for steep or irregular ore bodies.