Opencast mining involves scraping at the ground’s surface, while room and pillar mining occurs below ground. Likewise, longwall mining uses heavy machinery to dig at coal seams beneath the surface: learn more in this interactive inforgraphic.
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Opencast mining involves scraping at the ground’s surface, while room and pillar mining occurs below ground. Likewise, longwall mining uses heavy machinery to dig at coal seams beneath the surface: learn more in this interactive inforgraphic.
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