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Why are some products of the rock cycle quarried and others mined?
Wiki User
∙ 15y ago
The general answer is that some things are underground, and recovering them by removing material covering them up is not practical. A lot of coal is mined by removing overburden (the stuff covering the coal seam) and then, after the coal is removed, replacing that material to reclaim the land. We also see gigantic open pits were we recover copper and other minerals. But in the case of some minerals, particularly precious ones, we have to follow a seam or vein to recover metals, precious stones or the like. We need to point out that a quarry is generally a term applied to an open pit or surface excavation from which material is extracted. Mining includes open pit or surface mining, and also underground mining, which is generally at least an order of magnitude more dangerous. Hopefully the question was asking why some minerals or materials were taken from the surface, and others were removed from shafts or drifts or a combination of them.
Wiki User
∙ 15y ago
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