FORESTRY
FOREST POLICY AND GOVERNANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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underburden
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overburden
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lithosphere
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asthenosphere
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Detailed explanation-1: -Overburden is the rock or soil layer that needs to be removed in order to access the ore being mined. Overburden is also referred to as spoil or waste. Overburdens are removed from surface mining and do not contain toxic components, unlike tailings, which is another type of underground mining waste.
Detailed explanation-2: -In mining, overburden (also called waste or spoil) is the material that lies above an area that lends itself to economical exploitation, such as the rock, soil, and ecosystem that lies above a coal seam or ore body.
Detailed explanation-3: -Strip mining is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden); this activity is also referred to as overburden removal.