Record Display for the EPA National Library Catalog


Main Title A preliminary radiological assessment of radon exhalation from phosphate gypsum piles and inactive uranium mill tailings piles /
Author Horton, Thomas R. ; Horton, Thomas A.
CORP Author Eastern Environmental Radiation Facility, Montgomery, AL.
Publisher U.S. Environmental Protection Agency, Office of Radiation Programs,
Year Published 1979
Report Number EPA 520-5-79-004
Stock Number PB85-191534
OCLC Number 29924981
Subjects Radon--Environmental aspects ; Tailings (Metallurgy) ; Uranium--Environmental aspects
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
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD RPS EPA 520-5-79-004 repository copy AWBERC Library/Cincinnati,OH 02/24/2020
ERAD  EPA 520/5-79-004 Region 9 Library/San Francisco,CA 07/16/2012
NTIS  PB85-191534 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation v, 15 pages ; 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 (pages 14-15). "EPA 520/5-79-004." "September 1979."