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Coal mining; Surface mining; Underground mining; cutting a network of 'rooms' into the coal seam and leaving behind 'pillars' of coal to support the roof of the mine.
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Design of a Powered Support System in Enugu Coal Mine miners had to get the coal below the ground. The supports are installed in the mine depending on
THE FRACTURE MECHANICS APPROACH TO UNDERSTANDING behavior of underground coal mine supports. countered in an underground coal mine.· 2017-5-26
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