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Document ID (ISN)23908
CIS number 75-1900
ISSN - Serial title 0003-4878 - Annals of Occupational Hygiene
Year 1974
Convention or series no.
Author(s) Ogden T.L.
Title A method for measuring the working-level values of mixed radon and thoron daughters in coalmine air.
Bibliographic information Aug. 1974, Vol.17, No.1, p.23-34. 18 ref.
Abstract Airborne radioactivity in mines can reach hazardous levels even where no obviously radioactive mineral is present. Field trials involving measurement of alpha activity of shift-long respirable dust samples were carried out over 8 months using the MRE gravimetric dust sampler: the value obtained was fairly close to a shift average. The theoretical basis of the method is described in great detail. Since there was no significant difference between the radioactivity levels calculated from respirable and total dust samples, it was possible to use standard respirable dust samples for routine work.
Descriptors (primary) airborne dust; coal mining; monitoring for air contamination; radioactive substances
Descriptors (secondary) radon; alpha radiation; description of technique; respirable dust
Document type -
Subject(s) Radiation
Broad subject area(s)
Browse category(ies) Mining and quarrying