Workers' asthma and respiratory symptoms at a soy processing facility
The Health Hazard Evaluation (HHE) Programme evaluated workers' asthma and respiratory symptoms at a soy processing facility. Investigators found that some dust concentrations in the air exceeded current occupational exposure limits. Investigators recommended respiratory protection for all workers with work-related asthma and, if that is ineffective, relocating those workers to lower exposure areas.
Source: http://www.cdc.gov/niosh/hhe/reports/pdfs/2007-0073-3089.pdf