Radiation Exposure of Uranium Miners: Additional backup and reference material to the hearings held May 9, 10, 23, June 6, 7, 8, 9, July 26, 27, and August 8 and 10, 1967Considers levels of radiation to which uranium miners are exposed, radiation monitoring standards, and health implications of uranium radiation exposure, including its possible relation to lung cancer. |
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Common terms and phrases
absorbed dose alpha energy alpha particles alpha radiation alpha ray amount atmosphere Atomic Energy average body burden bone bronchi bronchial epithelium calculated carcinoma cell type Colorado Colorado Plateau concentration of radon contamination death decay products deposition dose equivalent dose rate dust effect equilibrium estimated Evans exposure to radon factor filter gamma hazard ICRP inhaled ionization ionizing radiation Jachymov liter of air lung cancer maximum permissible measured method miners minute mucus NCRP oat cell occupational operations percent period permissible dose polonium pressure Public Health Service radiation dose Radiation Protection radioactive radioactive decay radionuclides radium radon and radon radon concentration radon daughter concentrations radon daughter products radon release recommended reduce reported respiratory samples silicosis smoking sputum standard Table tion tissue tumor underground uranium mining uranium mines ventilation X-ray score
Popular passages
Page 971 - ... that dose, accumulated over a long period of time or resulting from a single exposure, which, in the light of present knowledge, carries a negligible probability of severe somatic or genetic injuries; furthermore, it is such a dose that any effects that ensue more frequently are limited to those of a minor nature that would not be considered unacceptable by the exposed individual and by competent medical authorities.
Page 1022 - Threshold limit values refer to airborne concentrations of substances and represent conditions under which it is believed that nearly all workers may be repeatedly exposed day after day without adverse effect.
Page 1167 - It need not have been foreseen or expected, but after the event it must appear to have had its origin in a risk connected with the employment, and to have flowed from that source as a rational consequence.
Page 872 - The unit of exposure dose of X- or gamma radiation is the roentgen (r). One roentgen is an exposure dose of X- or gamma radiation such that the associated corpuscular emission per 0.001293 g of air produces, in air, ions carrying 1 electrostatic unit of quantity of electricity of either sign.
Page 1366 - The roentgen shall be the quantity of X or gamma radiation such that the associated corpuscular emission per 0.001293 gram of air produces, in air, ions carrying 1 electrostatic unit of quantity of electricity of either sign.
Page 1329 - Council is to advise the President with respect to radiation matters, directly or indirectly affecting health, including guidance for all Federal agencies in the formulation of radiation standards, and in the establishment and execution of programs of cooperation with the States.
Page 873 - The absorbed dose of any ionizing radiation is the amount of energy imparted to matter by ionizing particles per unit mass of irradiated material at the place of interest.
Page 1166 - Under this test, if the injury can be seen to have followed as a natural incident of the work and to have been contemplated by a reasonable person, familiar with the whole situation as a result of the exposure occasioned by the nature of the employment, then it arises 'out of the employment.
Page 1362 - For uranium mines, records of environmental concentrations in the occupied parts of the mine, and of the time spent in each area by each person involved in an underground work shall be established and maintained. These records shall be in sufficient detail to permit calculations of the exposures, in units of working level months, of the individuals and shall be available for inspection by the Secretary of Labor or his authorized agents.
Page 1365 - The time required for the body to eliminate onehalf of an administered dose of any substance by regular processes of elimination. This time is approximately the same for both stable and radioactive isotopes of a particular element.