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What is the purpose of pre-splitting in underground development

This question belongs to Mining Engineering Mine Development And Mining Methods
Mine Development and Mining Methods
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What is the purpose of pre-splitting in underground development?

Answer & Solution
Correct Answer: Option C
Pre-splitting involves drilling closely spaced holes along the boundary of excavation.The correct answer is: Controlled wall breakageIt reduces overbreak and maintains stable tunnel walls.Used before main blasting.
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