Record Display for the EPA National Library Catalog
RECORD NUMBER: 21 OF 3191
|OLS Field Name||OLS Field Data|
|Main Title||A preliminary radiological assessment of radon exhalation from gypsum piles and inactive uranium mill tailings piles /|
|Author||Horton, Thomas A.|
|CORP Author||Eastern Environmental Radiation Facility, Montgomery, AL.|
|Publisher||U.S. Environmental Protection Agency, Office of Radiation Programs,|
|Additional Subjects||Radioactive contaminants ; Industrial hygiene ; Gypsum deposits ; Florida ; Exposure ; Assessments ; Sources ; Tables(Data) ; Concentration(Composition) ; Uranium mills ; Mill tailings ; Radon 222 ; Phosphate mining ; Solid wastes|
|Collation||22 pages : tables ; 28 cm|
The EPA Office of Radiation Programs has conducted a series of studies to determine the radiological impact of the phosphate mining and milling industry. This report describes the efforts to estimate cumulative working level months (CWLM) from radon-222 daughters produced from radium-226 in phosphate gypsum piles and how these estimates compare with CWLM from inactive uranium mill tailings piles. Two Florida phosphate gypsum piles were selected for radon exhalation rate measurements. Indoor radon concentration, indoor working level, and individual and population CWLM were computed from the exhalation rate and source size for each source category. The calculated results for each source category are tabulated and compared.
Includes bibliographical references. EPA 520/5-79-004. Sept. 1979. Microfiche.