1. Associate Professor, Co-Director, Center for Research Excellence in Occupational Safety, Industrial and Manufacturing Engineering, Western Michigan Univ., Kalamazoo, MI 49008.
2. Associate Professor, Co-Director, Center for Research Excellence in Occupational Safety, Construction Engineering and Management, Western Michigan Univ., Kalamazoo, MI 49008 (corresponding author).
3. Assistant Professor, Dept. of Occupational and Environmental Safety and Health, Univ. of Wisconsin-Whitewater, Whitewater, WI 53190.
4. REU Research Assistant, Construction Engineering and Management, Western Michigan Univ., Kalamazoo, MI 49008.