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Radiation Dosimetry in Uranium Mines. Part 1 - Radon Dosimetry Using Plastic Nuclear Track Detectors. Part 2 - Measurements of Gamma-ray Exposures.

Authors
Frank-AL; Benton-EV; Cassou-RM
Source
NTIS: PB 294-657 :122 pages
Link
NIOSHTIC No.
10001635
Abstract
The uranium mine environment is characterized by airborne radon-222 and its daughter products to which miners are exposed through breathing and by gamma- and x-rays from the uranium-235 and uranium- 238 chains to which the miners are exposed externally. The nature of the radon-daughter concentrations and the methods used to define and measure the exposures are explained through an extensive review of the literature. An improved passive track-etch dosimeter for personal use is proposed which has a measurement range of about 30 to 400 working level hours with a 95 pct confidence interval to 25 pct for individual detector measurements in relatively stable mine air. Some measurements of these dosimeters adapted to environmental use are also presented. A program of development for enhancement of dosimeter sensitivity and greater accuracy of measurement is outlined.
Publication Date
19780101
Document Type
CP; Final Contract Report;
Fiscal Year
1978
NTIS Accession No.
PB-294657
NTIS Price
A07
Identifying No.
OFR 32-79
NIOSH Division
DRC;
Source Name
NTIS: PB 294-657
Performing Organization
University of San Francisco
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