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BETA-GAMMA SKIN HAZARD IN THE POSTSHOT CONTAMINATED AREA,
WALTER REED ARMY INST OF RESEARCH WASHINGTON DC
In the present experiment the beta and gamma radiation dose that would be received by the sensitive layer of the skin was measured in several contaminated areas in Frenchman Flat and Yucca Flat. Specially constructed, thin-walled ion chambers were used which were sensitive to gamma rays and to all beta particles considered to be a hazard. It was found that, although there is, indeed, an increase in radiation hazard at points near the ground, the very large beta dose to be expected from theory does not actually occur in the field. Because of the particulate nature of the contamination the conclusions reach do not apply for elevations of less than 1 cm. Author
Report on Operation Upshot-Knothole-Project 4.7.