1. Former Master Student, Dept. of Civil and Environmental Engineering, Univ. of Windsor, 401 Sunset Ave., Windsor, ON, Canada N9B 3P4.
2. Postdoctoral Fellow, Dept. of Civil and Environmental Engineering, Univ. of Windsor, 401 Sunset Ave., Windsor, ON, Canada N9B 3P4.
3. Ph.D. Student, Dept. of Civil and Environmental Engineering, Univ. of Windsor, 401 Sunset Ave., Windsor, ON, Canada N9B 3P4.
4. Professor, Dept. of Civil and Environmental Engineering, Univ. of Windsor, 401 Sunset Ave., Windsor, ON, Canada N9B 3P4 (corresponding author).
5. Senior Engineer, Lambton Conveyor Ltd., 102 Arnold St., Wallaceburg, ON, Canada N8A 3P4.