1. Teaching Assistant Professor, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Raleigh, NC (corresponding author).
2. Retired, 3509 Cattlet Farm Rd., Wake Forest, NC 27587; formerly, Pretreatment Manager, Cary, NC.
3. Associate Professor, Dept. of Food Science, Purdue Univ., Food Science Bldg., Rm. 3215, 745 Agriculture Mall Dr., West Lafayette, IN 47907–2009.
4. Associate Professor, Dept. of Forestry, Southern Illinois Univ., Mailcode 4411, Carbondale, IL 62901–4411.
5. Associate Professor, Dept. of Civil Construction and Environmental Engineering, North Carolina State Univ., Raleigh, NC.