1. Director, Environmental Geotechnics Ltd., Adderbury, Banbury, OXON, U.K.; Visiting Professor, Univ. of Oxford.
2. Cementation Skanska, Maple Cross House, Denham Way, Maple Cross, Rickmansworth, Watford, U.K.
3. A-Squared Studio Engineers Ltd., One Westminster Bridge Rd., London SE1 7XW, England, U.K.
4. Formerly, Lecturer, Geotechnical Engineering, Univ. of Manchester, Manchester, U.K.