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Open-cast mine
As opposed to underground mines, in open-pit mines the layers covering coal are removed, so the coal can be extracted on the surface.
Grades 5 – 12
Keywords
mozaLink
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As opposed to underground mines, in open-pit mines the layers covering coal are removed, so the coal can be extracted on the surface.
Grades 5 – 12
Keywords
mozaLink
/Weblink