كواحد من قادة questionnaire for the study on stone crushing dust الصناعة ، تسعى SBM دائمًا إلى الابتكار والتميز.
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cough was % among quarry workers in stone crushing . ... questionnaire previously validated in a study ... Chronic exposure to dust due to stone quarrying ...
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On Oct 1, 2012 Nwibo (and others) published: Pulmonary Problems among Quarry Workers of Stone Crushing Industrial Site at Umuoghara.
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Keywords: quality, internal audit, questionnaire study, audit ... Stone Dust to Control Coal Dust ... The crusher is ideally primary crushing and secondary crushing.
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cough was % among quarry workers in stone crushing ... Dust exposure, respiratory symptoms and disease ... health questionnaire. Area gravimetric dust ...
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