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Monday, May 18, 2020 | History

2 edition of Radon daughter mixture distributions in uranium mine atmospheres found in the catalog.

Radon daughter mixture distributions in uranium mine atmospheres

Robert F Holub

Radon daughter mixture distributions in uranium mine atmospheres

by Robert F Holub

  • 138 Want to read
  • 26 Currently reading

Published by Dept. of the Interior, Bureau of Mines in [Washington] .
Written in English

    Subjects:
  • Radon,
  • Uranium mines and mining -- Safety measures

  • Edition Notes

    Bibliography: p. 19-20

    Statementby Robert F. Holub and Robert F. Droullard
    SeriesReport of investigations - Bureau of Mines ; 8316
    ContributionsDroullard, R. F. joint author, United States. Bureau of Mines
    The Physical Object
    Pagination20 p. :
    Number of Pages20
    ID Numbers
    Open LibraryOL14914974M

    A Comparison of Alpha Spectroscopy and Gross Alpha Techniques for Determining Working Level in Uranium Mines and Houses Distributions in Uranium Mine Atmospheres. Radon daughter mixture. Determination of the unattached radon daughter fractions in some uranium mines. Presented at the Workshop on Attachment of Radon Daughters, Measurement Techniques and Related Topics, Octo , University of Toronto. and A. C. George. Reanalysis of data on the particle size distribution of radon progeny in uranium mines.

    Uranium mines in Colorado and New Mexico were surveyed for airborne concentrations of radon () and radon daughters. A procedure for measuring individual daughters and the fraction of each existing as free atoms was developed and used for field monitoring. Samples were taken in working areas and particle counts were made.   The Free Enterprise Radon Health Mine is the oldest of the bunch, opening for business as Montana's first uranium mine in , before transitioning its extraction focus to the more intangible resource of personal health just three years later.

    Radon daughter mixture distributions in uranium mine atmospheres / ([Washington, D.C.]: Dept. of the Interior, Bureau of Mines, []), by Robert F. Holub and R. . Radon, the lognormal distribution and deviation from it Article in Journal of Radiological Protection 34(1) January with 51 Reads How we measure 'reads'.


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Radon daughter mixture distributions in uranium mine atmospheres by Robert F Holub Download PDF EPUB FB2

Radon daughter mixture distributions in uranium mine atmospheres [Holub, Robert F.] on *FREE* shipping on qualifying offers. Radon daughter mixture distributions in uranium mine atmospheresPrice: $ Get this from a library.

Radon daughter mixture distributions in uranium mine atmospheres. [Robert F Holub; R F Droullard; United States. Bureau of Mines.]. Health Phys. Nov;39(5) Role of plateout in radon daughter mixture distributions in uranium mine atmospheres.

Holub RF, Droullard by: 1. Uranium is mined the world over and workers are exposed to a radio-active atmosphere due to the associated presence of uranium descendants.

The chief elements of danger arise from radon and the Active Deposit, a term which it is hoped British writers and readers will continue to use rather than that used by American authors.] The present authors tried to copy mine conditions in their studies by Cited by: 1.

Radon daughter mixture distributions in uranium mine atmospheres / By Robert F. Holub and joint author. (Robert F.) Droullard (p. ).Mode of access: Internet Topics: Uranium mines and mining, Radon. Publisher.

CHAPTER 8 RADON DECAY PRODUCTS IN THE ATMOSPHERE Once in the atmosphere the radon atoms continue to decay producing isotopes of polonium, lead, and bismuth. These elements may exist briefly as ions and/or free atoms before forming molecules or attaching to solids in the form of aerosols or other materials.

Andrews () Measurements of Radon and Radon Daughter Aerosols in Socorro, New Mexico, Aerosol Science and T echnology, DOI: / T o. In particular, in an atmosphere far from radioactive equilibrium, such as a working area in a mine close to a source of radon and supplied with fresh air, the unattached fraction can be a factor of ten or more greater than indicated by a simple particle concentration measurement.

environments in close proximity to rocks that contain traces of uranium ores. Radon is a potential problem in any mine and tests for its presence should be carried out early in the development of a new mineral deposit. The hazard can also exist in the basements of surface buildings.

As would be expected, the problem of radon is greatest in. In underground uranium mines, radon is not only exhaled from the mine walls (ore body and waste rock) but also from the broken ores present in the stopes.

The ore, fragmented during the course of mining operations, provides a source of higher radon exhalation due to the increased exposed surface area (Thompkins & Cheng, ).Cited by: 6. Dispersion of radon in the atmosphere around old uranium mill tailings is no need to carry out a radon monitoring in the near- est settled areas, such as the villages Gorkogo, Paultry.

This study estimated (1) radon and radon daughter emissions from underground uranium mines; (2) the reduction in radon that would be released to the surface by using control techniques such as bulkheads, sealants, backfilling, and positive pressure ventilation; (3) the cost for radon and radon daughter removal from total exhaust air; and (4) total radon and radon daughter discharge for lower.

@article{osti_, title = {Size distribution of radon daughter particles in uranium mine atmospheres}, author = {George, A C and Hinchliffe, L and Sladowski, R}, abstractNote = {An investigation of the particle size distribution and other properties of radon daughters in uranium mines was reported earlier but only summaries of the data were presented.

This report consists. When radon gas is allowed to build up in an enclosed space, such as a mine shaft or basement, the radioactive hazard increases enormously because of the build-up of radon progeny. Conversely, when radon gas migrates through the atmosphere, the solid radon progeny are deposited on the soil and water below, entering into the food chain and hence.

Underground Non-Uranium Mines. Screening Frequency - Annually sample all metal and nonmetal mines where radon daughters have exceeded WL in the past, per 30 CFR § (a).

Sample remaining nonmetal and stone mines every three years. Sample new or reopened mines as soon as possible. Sample exhausts (return airways) and poorlyFile Size: 1MB. MEASURING AIRBORNE RADON PROGENY AT URANIUM MINES AND MILLS PURPOSE This regulatory guide is intended to help users measure and compute instantaneous concentrations of airborne radon progeny at uranium mines and mills.

SCOPE This document describes a method that Canadian Nuclear Safety Commission (CNSC) inspectorsFile Size: 94KB. Size distribution of radon daughter particles in uranium mine atmospheres.

George AC, Hinchliffe L, Sladowski R. The size distribution of radon daughters was measured in several uranium mines using four compact diffusion batteries and a round jet cascade impactor. Simultaneously, measurements were made of uncombined fractions of radon daughters, Cited by: George A, Breslin AJ.

Deposition of radon daughters in humans exposed to uranium mine atmospheres. Health Phys. Jul; 17 (1)– Henshaw DL, Eatough JP, Richardson RB. Radon as a causative factor in induction of myeloid leukaemia and other cancers.

Lancet. Apr 28; ()–Cited by: Radon daughter mixture distributions in uranium mine atmospheres. with the objective of determining whether these variations reflect the existing physical conditions in uranium mine atmospheres or if they are merely random or systematic errors.

To accomplish this, many data have been plotted using a triangular graphing technique which shows. All radon isotopes are NORMs.

However, most of the radioactivity in the atmosphere at sea level is attributable to Rn and, mostly, Rn. Rn importance is due to its high abundance of weight (%) compared to the totalCited by:.

A limited discussion of the biological effects of radon and radon daughters is undertaken, and some procedures are given for evaluating hazards created by other common contaminants of mine atmospheres.

The study endeavored to assemble pertinent information and make it available to those who are concerned with producing uranium at minimal risks.GUIMOND, R.

J. and SAM T. WINDHAM. Radioactivity Distribution in Phosphate Products, By-Products, Effluents, and Wastes, ORP Technical Note, ORP/CSD (August ). 2. HEALTH SERVICE. Publication No.Control of Radon and Daughters in Uranium Mines and Calculations on Biologic Effects (). 3.MANUAL ON RADIOLOGICAL SAFETY IN URANIUM AND THORIUM MINES AND MILLS IAEA, VIENNA, STI/PUB/ Particularly in underground uranium mines, efficient control of radon and its daughters in the mine atmosphere is a somewhat difficult Size: 3MB.