1. Honorary Member, ASCE
2. Member, ASCE
3. Univ. Distinguished Prof., Dept. of Civ. and Envir. Engrg., Virginia Polytechnic Inst., Blacksburg, VA 24061-0105. E-mail: jmd@vt.edu.
4. Sr. Geotechnical Engr., Terracon, 11849 W. Executive Dr., Boise, ID 83713.