1. Associate Professor, Geotechnical Research Centre, Dept. of Civil and Environmental Engineering, The Univ. of Western Ontario, London ON, Canada N6A 5B9.
2. Lecturer, Dept. of Civil Engineering, Univ. of Dundee, Dundee, Scotland DD1 4HN, U.K.
3. Senior Geotechnical Engineer, Jacobs Babtie, 95, Bothwell St., Glasgow G2 7HX, U.K.
4. Assistant Geotechnical Engineer, Jacobs Babtie, 95, Bothwell St., Glasgow G2 7HX, U.K.