Geography, asked by nakiwolojovia18, 11 hours ago

10 Similarities constract open method to underground mining method

Answers

Answered by vg5610767
1

Explanation:

Surface mining is suitable for large, low-grade ore deposits which occur below a thin layer of rock, or alluvial deposits found in sand and riverbeds. Underground mining is used for small, high-grade deposits covered with a thick overburden (soil and rock above the ore), or for deep and sloping deposits.

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