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Hanford Site mortality update : age at exposure to ionizing radiation
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June 2005
[PDF-49.61 KB]
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Description:Study Rationale: This study examined whether there are associations between occupational exposure to external ionizing radiation and mortality (death), particularly from cancer, among workers employed at the Hanford Site. Evaluation of the ages at which workers were exposed to radiation was an important part of this research.
Study Population: The study included 26,389 employees of prime contractors who were hired at the Hanford site between 1944 and 1978 and monitored for ionizing radiation exposures during employment.
How This Study Was Done: Information on causes of deaths for the Hanford workers was obtained for the period 1944-1994 using data from federal, state and pension records. Hanford employment history and radiation monitoring records were used to estimate cumulative external radiation doses at all ages, and in specific age ranges. For periods of employment with missing external radiation exposure records, estimated doses were derived based upon the historical dosimetry records that were available. Since available data on plutonium exposure were inadequate to reconstruct historical plutonium doses, workers were assigned potential plutonium exposures based on job titles and process areas at Hanford.
GRNT_HANF_05-13-2005.pdf
HERB - GRNT_HANF 062005
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Pages in Document:2 unnumbered pages
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Resource Number:National Institute for Occupational Safety and Health announcement of findings
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