Illinois Department of Transportation’s Traffic Safety Division / county coroners and Cook County Medical Examiner’s Office / Bureau of the Census / Illinois Department of Labor’s Division of Safety Inspection and Education / Illinois Department of Public Health Division of Epidemiologic Studies Springfield / U.S. Occupational Safety and Health Administration / Division of Epidemiologic Studies / Illinois State Police / Chicagoland Construction Safety Council / National Transportation Safety Board / U.S. Mine Safety and Health Administration / Department of Public Health Damon T. Arnold / Illinois Industrial Commission / Public Health’s Division of Vital Records / Illinois Department of Public Health / U.S. Department of Labor / Bureau of Labor Statistics / /