Mine Safety and Health Administration / Illinois Department of Transportation’s Traffic Safety Division / U.S. Department of Labor's Bureau of Labor Statistics / federal government / Illinois Department of Labor's Division of Safety Inspection and Education / county coroners and Cook County Medical Examiner's office / Illinois Department of Public Health Division of Epidemiologic Studies Springfield / Public Health's Division of Vital Records / Division of Epidemiologic Studies / Illinois State Police / Chicagoland Construction Safety Council / National Transportation Safety Board / Illinois Industrial Commission / Illinois Cooperative Extension Service / Illinois Department of Public Health / U.S. Department of Labor / National Academy of Sciences / Occupational Safety and Health Administration / /