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What is the main disadvantage of block caving

This question belongs to Mining Engineering Mine Development And Mining Methods
Mine Development and Mining Methods
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What is the main disadvantage of block caving?

Answer & Solution
Correct Answer: Option B
Ore dilution is the major concern in block caving.The correct answer is: High ore dilutionAs the rock caves, waste rock can mix with ore, reducing grade.Though cost-effective for large volumes, it lacks selectivity.
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