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Dust exposure during small scale mining in tanzania a.Respirable particles are formed whenever silica bearing rock is drilled blasted or crushed in large scale mines in south africa and china the exposure to crystalline silica is normally lt 0 5 mg m 3 beadle and bradley 1970 dosemeci et al 1995 however there seems to be no published studies on dust exposure in small scale mining in.Read Mode
What are the qualifications to be a coal miner.The first step to becoming a coal miner is to obtain the necessary education which includes completing a training course approved by the mine safety and health administration new underground miners must receive a minimum of 40 hours of instruction with 32 hours of the training in the classroom and eight hours at a mine site.Read Mode
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