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به خواندن ادامه دهیدMilled limestone, referred to as “rock dust” by the coal industry, is an additive used for safety in underground bituminous coal mines. The particles of the ...
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به خواندن ادامه دهیدJan 11, 2011· With China's accelerating economy heavily dependent on coal, mine safety has emerged as a national priority. Moving to embrace high-tech solutions to ...
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