Which mining method is most suitable when a valuable mineral deposit is located deep underground beneath thick layers of stable rock?

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A Open-cast mining
B Strip mining
C Sub-surface (shaft) mining
D Artisanal panning

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Answer: C. Sub-surface (shaft) mining

Answer Explanation: C. Sub-surface mining uses vertical shafts and horizontal tunnels to access deep-seated mineral veins without removing massive quantities of overlying rock, unlike surface or open-cast mining.

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Which mining method is most suitable when a valuable mineral deposit is located deep underground beneath thick layers of stable rock?

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