1. Environmental Laboratory, Engineer Research
and Development Center, US Army Corps of Engineers, 696 Virginia Road, Concord, Massachusetts 01742, United States
2. The Norwegian
Defence Estates Agency, Forsvarsbygg, P.O. Box 405
Sentrum, Oslo, NO-0103, Norway
3. Norwegian Geotechnical Institute, P.O. Box 3930 Ullevål Stadion, Oslo, NO-0806, Norway
4. Department
of Industrial Economics and Technology Management, Norwegian University of Technology, Trondheim 7491, Norway
5. London School of Economics, Houghton Street, London WC2A 2AE, United Kingdom