1. Department of Civil and Environmental Engineering, University of Wisconsin, 2214 Engineering Building, 1415 Johnson Drive, Madison, Wis. 53706.
2. Abletech, Inc., P.O. Box 15176, Ann Arbor, Mich. 48106.
3. Engineering Geo-Techniques, 1212 James Savage, Suite G3, Midland, Mich. 48640.