Health Hazard Evaluation Determination Report No. 74-110-306, Morris Bean and Company, Yellow Springs, Ohio

摘要

Exposure to toxic substances were investigated at Morris Bean and Company, Yellow Springs, Ohio on January 19-20, 1976. Personal and area air sampling was conducted for free-silica, formaldehyde, phenol, dimethylethylamine (DMEA), and methylene-bisphenyl-icocyanate (MDI). Medical histories of 34 workers were obtained. Some physical examinations and clinical tests were conducted. All but two MDI air samples were below the threshold limit value (TLV) of 0.2 milligrams per cubic meter (mg/CuM). Three free-silica samples were in excess of the 50 micrograms per cubic meter NIOSH standard. All DMEA samples were below 8 parts per million. Formaldehyde and phenol were not found at toxic concentrations. The symptoms reported included mucous membrane, eye, ear, nose, throat, sinus, and skin irritations and respiratory difficulties. Eight workers reported acute nausea, sore throat, headache, and nose blockage. Workers at this company are not exposed to toxic chemical concentrations. Recommendations are made to maintain minimum DMEA and free-silica concentrations by improving two local exhaust systems, improving air exchange rates, providing protective clothing, and instituting other cleaning procedures. Medical surveillance programs are outlined.