differentiate between surface mining underground mining
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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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Answer:
In surface mining minerals are obtained directly from the earth's surface.
In underground mining minerals are obtained with the help of tunnels going into the earth.
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