1. Agricultural Safety and Health Engineering Assistant Specialist in Cooperative Extension, Defpartment of Biological and Agricultural Engineering, University of California, Davis
2. Professor, Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville
3. Emeritus Research Scientist in Emergency Medicine, Department of Emergency Medicine, University of Iowa Carver College of Medicine
4. MD,Clinical Professor of Pediatrics and Emergency Medicine, Department of emergency medicine, University of Iowa Carver College of Medicine
5. Associate Professor / State Agricultural Safety Leader, Department of Food, Agricultural and Biological Engineering, agricultural safety and health program, The Ohio State University
6. Associate Professor (Adjunct), Environmental Health, Emory University, Emory Rollins School of Public Health, Atlanta, Georgia
7. Retired highway and motor vehicle safety attorney
8. Associate Professor, Applied Sciences, Technology & Education, Agricultural Systems Technology and Education program, Utah State University
9. PhD, Professor of Social and Behavioral Health Sciences, College of Public Health and Human Sciences, School of Social and Behavioral Health Sciences and Extension 4-H Youth Development, Oregon State University