1. Research Associate, Dept. of Civil & Environmental Engineering, Univ. of South Carolina, 300 S. Main St., Columbia, SC 29208.
2. Associate Professor, Dept. of Civil & Environmental Engineering, Univ. of South Carolina, 300 S. Main St., Columbia, SC 29208.
3. Senior Research Geologist, Shell International Exploration & Production, P.O. Box 481, Houston, TX 77001.