Thomas Johnson

Professor - Health Physics Environmental and Radiological Health Sciences


(970) 491-0563 view faculty website

About Thomas

Dr. Johnson’s research lab is focused on movement of radionuclides in the environment and laser safety. He has worked with ionizing and non-ionizing radiation for over 20 years. Dr. Johnson worked as an ELT on the USS Cavalla (SSN-684), in consulting, at coal and at nuclear power plants.


Ph.D. - Health Physics, Purdue University, 1997M.S. - Environmental Health Engineering, Northwestern University, 1993M.B.A. - Operations Management and Finance, University of Illinois, 1991B.S. - Industrial Technology, Southern Illinois University, 1989


Certified Health Physicist, ABHP
National Registry of Radiation Protection Technologists, NRRPT
Certified Laser Safety Officer, CLSO


Elizabeth Ruedig, PhD; Colleen Duncan; Bobette Dickerson; Michael Williams; Thomas Gelatt; Justin Bell; Thomas Johnson (2016) Fukushima derived radiocesium in subsistence-consumed northern fur seal and wild celery, Journal of Environmental Radioactivity, pp. 1-7 DOI information: 10.1016/j.jenvrad.2015.10.024 Ruedig, E. Johnson T.E., (2015) An evaluation of health risk to the public as a consequence of in situ uranium mining in Wyoming, USA Journal of Environmental Radioactivity, Volume 150, December 2015, Pages 170–178 Luke D. Hetrick, Susan L. Kraft, Dayton McMillan, Thomas E. Johnson (2015) Occupational Exposure to Veterinary Workers from the Positron Emission Tomography Imaging Agent 64Cu-ATSM. Health Physics Journal, Vol. 109, No. 5, Suppl. 3, S219-S223, November, 2015.Schilz, J. R., Reddy, K. J., Nair, S., Johnson, T. E., Tjalkens, R. B., Krueger, K. P. (2015) Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability. J. Vis. Exp. (100), e52715, doi:10.3791/52715 (2015)