الفهرس 
Ferromanganese alloys
Ferromanganese Industrial processOnly 14 pages are availabe for public view
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Abstract
The objective of the present study was to investigate occupational health hazards of ferromanganese alloys industry. These hazards were due to Mn exposure. To fulfill this goal, a group of 145 workers was randomly selected. The workers are exposed to dust loaded with manganese in the sintering section in the ferromanganese alloys plant which belongs to Sinai Manganese Company at Abu Zenima district, South Sinai governorate. 166 workers not exposed to Mn or other toxic metals were chosen as a control group. Neurological examination revealed the signs suggestive to manganese toxicity were more prevalent in the exposed group as a comparison with the control group with p value<0.001. The most frequent neurological sign found during the neurological examination were positive finger tapping test (24.1%). The second most prevalent sign was bradykinesia (20.68%) followed by Hyperreflexia (20%) and intension tremors (17.24%). Regarding recurrent infection symptoms, the prevalence of eye, oral, skin and chronic bronchitis symptoms are more prevalent in the Mn-exposed group than the control group .