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Glossary of Mining Terms - Kentucky Coal . A. Abutment - In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments ... Industrial Mining & Aggregate Crushing . Providing Industrial Mining & Aggregate Crushing Grinding Solutions Worldwide. McNally Sayaji | McNally Sayaji Engineering . crushing equipment; screening equipment; grinding equipment; feeding equipment; material handling equipment; ash handling equipment; process plant equipment    Read More

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