1. Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
2. Brookhaven National Laboratory, Upton, New York 11973, USA
3. Pebble Bed Modular Reactor, Centurion 0046, South Africa
4. University of Toronto, Toronto, Ontario M5S 3GB, Canada
5. Vattenfall Ringhals AB, SE-430 22 Väröbacka, Sweden
6. Westinghouse Electric Company, Monroeville, Pennsylvania 15146, USA
7. OECD Halden Reactor Project, N-1777 Halden, Norway