Health hazard evaluation report: HETA-94-0033-2552, Ladish Malting Company, Jefferson, Wisconsin.
Morgantown, WV: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, HETA 94-0033-2552, 1996 Jan; :1-31
In response to a confidential request, worker exposures to mycotoxins during barley storage and malting operations at Ladish Malting Company (SIC-2083), Jefferson, Wisconsin were investigated. Medical and industrial hygiene surveys were conducted, and viable fungi were identified from all collected barley, malt, and dust samples. The most abundant genus cultured from the barley and dust samples was Fusarium. Barley samples also contained the trichothecene mycotoxins deoxynivalenol (51481108) (DON) and 15- acetyl-deoxynivalenol (88337966). Settled dust samples also contained DON mycotoxin. Operations involved the blowing and sweeping of dust and caused the aerosolization of mycotoxin containing dust. Some personal breathing zone and area levels of airborne grain dust were high compared with the OSHA permissible exposure limit of 10mg/m3 and the NIOSH recommended exposure level of 4mg/m3. Respiratory protection was used by all workers; however, the type of protection used was inadequate for protection against some of the higher levels of dust and mycotoxin. Employee medical evaluations identified symptoms of eye irritation, tiredness, and throat irritation that appeared after the start of the work shift. The onset of at least one symptom within 24 hours of beginning work was reported by 62% of those surveyed. No significant increases in body temperature were identified in the workers. The authors conclude that the potential for the development of hypersensitivity or toxic syndrome exists in this facility. The authors recommend control measures to prevent such occurrences.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-94-0033-2552; Hazard-Confirmed; Region-5; Biohazards; Grain-dusts; Organic-dusts; Occupational-exposure; Endotoxins;
Author Keywords: malting operations; Mycotoxins; Fungi; Barley; ODTS; Malting
Field Studies; Hazard Evaluation and Technical Assistance
National Institute for Occupational Safety and Health