University of Utah
1997-present Research Professor, Radiobiology, School of Medicine, and
1998-present Director, Utah Center of Excellence for Biomolecular Technologies
 
Lawrence Livermore National Laboratory, Livermore, California
1992-1996 Group Leader, Dosimetry and Exposure Assessment
1989-1992 Deputy and Acting Section Leader, Environmental Analysis and Assessment
1982-1989 Biophysicist, Biomedical Sciences Division
1975-1982 Health Physicist
 
Selected Honors, National Committees, and Research Awards
1991-present Member, National Academy of Sciences Working Group on
Hiroshima Dosimetry
1988-present Principal Investigator and Program Leader, Hiroshima Neutron
Dosimetry Re-evaluation, Department of Energy and National Academy of Sciences
1993-present Principal Investigator, I-129 dosimetry at Chernobyl,
Department of Energy and National Cancer Institute
1998-present Chairman, Research Needs Committee, Health Physics Society
1995-1998 Member, NCRP Committee 93, Radiation Measurements, National
Council on Radiation Protection and Measurements
1987-1997 Associate Editor and Member of Editorial Board, Health Physics Journal
1973-1975 U.S. Public Health Services Radiological Health Traineeship