effect of silica sand mining on flora in india | india crusher
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Sand mining is a practice that is used to extract sand, mainly through an open pit. However, sand is also mined from beaches, inland dunes .
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Sand mining effects, causes and concerns: A case study from Bestari Jaya, Selangor, Peninsular Malaysia
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OSHA PEL = permissible exposure limit of the Occupational Safety and Health Administration (OSHA); mg/m3 = milligrams of substance per cubic meter of air.
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Desiccant silica gel used for moisture absorber, antirusting of instruments, gauges and equipment 600~900
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