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Quarry Workers of Stone Crushing Industrial Site at Umuoghara, Ebonyi State, Nigeria AN Nwibo1, EI Ugwuja1, NO Nwambeke2, OF Emelumadu2, LU Ogbonnaya3 Abstract 1 Department of Chemi- Background: Respiratory problem is one of the major health hazards in dust-exposed cal Pathology, Faculty workers; it is a major cause of morbidity and mortality ...

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