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Room and pillar mining is one of the oldest pillar recovery mining has been historically responsible for 25 of American coal mining deaths caused by failures

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Coal mining is the process of extracting coal from the ground Coal is valued for its energy Continuous mining is a misnomer as room and pillar coal mining is very cyclical often only 10 20 of quot resources quot 2 quot Run of Mine quot ROM reserves and finally 3 quot marketable reserves quot which may be only 60 of ROM reserves

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Illinois employs three basic types of coal mining room and pillar longwall and coal seam 5 to 9 feet in panels approximately 1 500 feet wide and up to 3 to 5 nbsp

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