Document Details

Health Division and Biological Section of the Research Division Report for Month Ending June 15, 1945
Subject Terms:
barium, Building 706-D; beta rays, ulceration; biological, medical, report; health physics, ORNL; necrosis, radiation, tumor
Document Location:
DOE INFORMATION CENTER 1 Way, Oak Ridge, TN 37831; Eva Butler; Phone: 865-241-4780; Toll-Free: 800-382-6938, Option 6; FAX: 865-574-3521; Email:
Document Categories:
Health, Safety and Environment\Worker Health and Safety
Document Type:
Publication Date:
1945 Jun 18
Declassification Date:
1954 Apr 02
Declassification Status:
Document Pages:
Accession Number:
Document Number(s):
CH-2838, Copy 12A; TID-1040; TID1040
Originating Research Org.:
Clinton Laboratories
OpenNet Entry Date:
1998 Jun 16
This document contains a report for the Health Division and Biological Section of the Research Division for the month ending June 15, 1945. Each person working in 706-C during Hot Run #8 wore eight film badges distributed over various parts of the body in an effort to determine whether or not the regular badge meter gives a representative reading when worn at the usual location between belt and chest height. Hot Runs #8 and #9 in 706-C were run in quick succession without any radiation accidents. The samplers appended to the cell walls in the new Barium Production Building (706-D) have been the principal source of radiation in the working areas of this building. Activated irridium powder was spilled and tracked about Building 105 on 5/28/45 and was cleaned up after an extensive cleanup campaign. Initial service tests on the L & W and Zeus survey meters indicated they are very satisfactory instruments. In the construction of beta ray sources, it was found that scattering from the backing material is very important and may amount to as much as 86 percent of the ionization due to the primary radiation. Animals exposed to beta rays over a restricted area of the lumbar portion of the back during September 1944, were examined during the month. Ulceration and associated necrosis were found in three of the animals, all receiving 15000 r or more; the necrotic area of one extending through the muscular layer under the skin and exposing the fibrous tissue covering the spinal processes. Late ulceration in these cases represent a second breakdown of the superficial layers of skin, all of the treated animals having "completely" healed by 120 days following irradiation. The physiological picture of the response of a rat to a single large dose of beta rays is becoming increasingly clear. The tissue breakdown occurs so slowly that compensation can take place much better than in the case of thermal burns, so there is probably no reduction in blood volume and no secondary shock. A study was made of the lung tumor incidence in Strain CF-1 mice following a single large dose of gamma rays. It was found that the incidence of animals with tumors varies between 50 and 76 percent in the groups studied and is substantially the same in both the irradiated and control groups. It must be concluded that up to 8 months of age this radiation, as used, is not carcinogenic for lung tumors.

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