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What is the difference between gangue and ore? - Quora. What is the difference between gangue and ore? ... as well as from around the coal seam mining and blasting in the excavation of carbonaceous shale argillaceous shale powder sandstone and a small amount of limestone sand shale generally referred to as the coal gangue .
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Dust suppression measures were applied on all faces and conveyor systems. 2. 3 Manpower and occupational groups At the end of the dust year the ex-Pentremawr Colliery population was 360 including 151 men employed at Cynheidre 1 and 2 Colliery. Sixty of the workmen were classified as faceworkers, 186 as non-faceworkers and 114
To increase the loadability of the support system at long face and extraction gallery roadhead, 6.0 m rope bolts of deep laying with 2–3 m increment, which fasten the destroyed rock sheets of the immediate roof with the main one, were successfully tested and introduced in the mines.
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