Honors & Awards
- P. R. Edwards Award, Outstanding Microbiologist, Southeastern Branch, American Society for Microbiology, 1981
- Wellcome Visiting Professor - American Society for Microbiology and the Burroughs Wellcome Fund for 1984-1985
- The University of Oklahoma, Foundation Speaker, American Society for Microbiology, 1971, 1978, 1979, 1985
- Advisory Committee post-doctoral Center for Theological Inquiry, Princeton University 1984-1998
- Antarctic Service Medal, 1984
- Scientific and Technological Achievement Award USEPA, 1987
- Chief Scientist, U.S. Department of Energy, Office of Health and Energy Research, Deep Subsurface Science Research Program, 1988-1989
- Member, Society of Toxicology, 1985-2006
- Fellow, American Academy of Microbiology 1978-1984, 1993-2006
- Certificate of Appreciation, U. S. Department of Energy, Deep Subsurface Microbiology Program, 1986-89
- Procter and Gamble Award in Applied and Environmental Microbiology sponsored by the American Society for Microbiology for 1993
- Frank N. Nelson distinguished Lecturer in Molecular Biology, Biotechnology, and Medicine, Montana State University, 1994
- 1994 Per Brink Lecture in Ecology, University of Lund, Sweden
- Fellow, American Association for the Advancement of Science, 1994
- Fellow American Association for Advancenent Science 1994-2006
- Awarded 1995 Athalie Richardson Irvine Clarke Prize for Outstanding Achievement in Water Science and Technology by the National Water Research Foundation
- Appointed to the Naval Research Advisory Committee, 1995-1997
- Bunker Memorial Lecture International Congress of Marine Biofouling & Corrosion, Plymouth, UK, 1995
- Naval Research Advisory Board 1995-1997
- Director, Microbial Task Force, National Water Research Institute 1996-2006
- Science Team Leader for Assessment and Community Dynamics, Natural and Accelerated Bioremediation Research Program, Office of Health and Environmental Research, DOE, 1996-1999