In which mining method is "room and pillar" primarily used?
A. Salt and potash mining
B. Gold vein mining
C. Steep ore mining
D. Copper heap leaching
Answer: Option A
Solution (By Examveda Team)
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.This Question Belongs to Mining Engineering >> Mine Development And Mining Methods
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