1) Colorado Department of Public Health and Environment Central Cancer Registry.
2) Developing Comparisons for Risk Due to Plutonium and Carbon Tetrachloride Exposure, Institute for
Science and International Security, 1999.
3) U.S. Environmental Protection Agency, Respiratory Health Effects of Passive Smoking: Lung Cancer and
Disorders. Report EPA/600/6-90/006F, USEPA Office of Research and Development, 1993.
4) Calculated based on Radiological Assessments Corporation Task 4 Report, Rope et al, 1994 and Plutonium
Risk Report, Sinclair, Grogan and Volleque, 1999.