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Why is the crown pillar important in mining

This question belongs to Mining Engineering Mine Development And Mining Methods
Mine Development and Mining Methods
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Why is the crown pillar important in mining?

Answer & Solution
Correct Answer: Option B
Crown pillar is the rock left between mined-out stopes and the surface.The correct answer is: Acts as a safety barrier between stopes and surfacePrevents collapse and surface subsidence.Its design is critical for mine closure planning.
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