Bolsen, K. K. and R. E. Bolsen. 2006. Common silage pitfalls. Penn State Dairy Nutrition Workshop. http://www.das.psu.edu/dairynutrition/education/workshop2006/
“Preventing Fatalities Due to Fires and Explosions in Oxygen Limiting Silos.” Publication #86-118. June 1986. National Institute of Occupational Safety and Health, Department of Health and Human Services. 200 Independence Avenue, SW, Washington DC, 20201.
“NIOSH Warns Farmers of Deadly Risk of Grain Suffocation.” Publication 93-116. April 1993. National Institute of Occupational Safety and Health, Department of Health and Human Services. 200 Independence Avenue, SW, Washington DC, 20201.
“Agricultural Dusts and Gases.” Farm Occupational Safety Safety Information sheet. 1992. published by National Agricultural Library, United States Department of Agriculture. College Park, MD, 20850.
