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What is advance rate in the context of tunnel development

This question belongs to Mining Engineering Mine Development And Mining Methods
Mine Development and Mining Methods
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What is "advance rate" in the context of tunnel development?

Answer & Solution
Correct Answer: Option B
Advance rate measures how fast a tunnel progresses.The correct answer is: Distance mined per dayTypically expressed in meters/day or feet/day.Influenced by rock type, equipment, and method.
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