1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
4. European Commission, Ispra (Italy). Joint Research Centre
5. Hybrid Instruments Ltd., Birmingham (United Kingdom)
6. Intl Atomic Energy Agency (IAEA), Vienna (Austria)
7. National Nuclear Security Administration (NNSA), Washington, DC (United States)
8. SCK.CEN, Mol (Belgium)
9. Univ. of Michigan, Ann Arbor, MI (United States)
10. Canberra Ltd., Oxford (United Kingdom)
11. Arktis Radiation Detectors Ltd., Zurich (Sweden)
12. Chalmers Univ. of Technology (Sweden)
13. Symetrica Inc., Maynard, MA (United States)
14. Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
15. Japan Atomic Energy Agency (JAEA), Tokai (Japan)
16. GE Reuter-Stokes, Twinsburg, OH (United States)
17. Proportional Technologies Inc., Houston, TX (United States)
18. DG Energy (Luxembourg)
19. Inst. for Radiological Protection and Nuclear Safety (IRSN), Fontenay-aux-Roses (France)