some radioactive materials internally by ingestion and inhalation.
Estimates of the internal body burden from fall-out were obtained from the
analysis of urine samples collected soon after exposure. These data
indicated that the acute hazard from internally deposited fission fragments
was quite small as compared to the whole body gamma radiation exposure.
Although the radioactivity levels in the urine were low, the actiyity was
sufficient to obtain reasonable precision and to warrant additional long
term studies of the activity levels and excretion patterns of this rather
large and well isolated population.
The people from Alinginae and Utirik
were returned to their home islands in June 1954. Radiation intensities on
Rongelap,
however, precluded an early return to this atoll and the Rongelap
people lived on Majuro from June 1954 until July 1957. Basic data on the
food crops of the Marshallese indicated that after resettlement on the
contaminated atolls the intake of Sr/sup 90/ would be increased n/sup 65/,
and Co/sup 60/ were dietary considerably,
and that Cs/sup 137/, Zn/sup 65/
, and Co/sup 60/ were dietary constituents of island and ocean foodstuffs,
and also would be assimilated. The expected increase in the trace amounts
of radionucleides in the food supply of a large population would afford an
opportunity to investigate the rate of equilibration and the discrimination
factors operating between food supply and man. Urinary excretion levels of
Cs/sup 137/ and Sr/sup 90/ were measured from March 1954 through March
1958.
Zn/sup 65/ levels were first measured in 1958 samples.
tabulated. (C.H.)
Data are
Descriptors:
BODY; CESIUM 137; COBALT 60; CONFERENCE; DECONTAMINATION;
FALLOUT; FISSION PRODUCTS; FOOD; GAMMA RADIATION; ISLANDS; MAN; MARSHALL
ISLANDS; METABOLISM; NUCLEAR EXPLOSIONS; PACIFIC OCEAN; POPULATIONS;
QUANTITATIVE ANALYSIS; RADIATION DOSES; RADIOACTIVITY; SAMPLING; STRONTIUM
90; TESTING; URINE; USA; ZINC 65
Subject Codes (NSA): BIOLOGY AND MEDICINE
10/5/204
(Item 204 from file: 109)
122971
NSA-14-006504
ATMOSPHERIC CONDUCTIVITY.
Annex 4.6
of
Scientific Director’s Report
of Atomic Weapon Tests at Eniwetok, 1951.
OPERATION GREENHOUSE
Coroniti, S.C.; Walt, G.R.; Parziale, A.J.
Air Force Cambridge Research Center, Mass.
Publication Date: Sept.
Primary Report No.:
1951
83 p.
WT-71(Del.)
Journal Announcement: NSA14
Availability: NTIS
Document Type: Report
Language: English
Data are presented from measurements of air conductivity and ion content
of air within an atomic cloud, and measurements of air conductivity above
the shot area and adjacent terrarn. The rate and magnitude of fall-out and
its relation to the direction and velocity of the wind were also measured.
(C.H.)
Descriptors:
AIR; ATMOSPHERE;
DISTRIBUTION;
ELECTRIC CONDUCTIVITY;
ENVIRONMENT; FALLOUT; IONS; MEASURED VALUES; NUCLEAR EXPLOSIONS;
RATIO; VELOCITY; WIND
Subject Codes (NSA): GEOLOGY, MINERALOGY, AND METEOROLOGY
10/5/205
122577
(Item 205 from file:
NSA-14-006108
PHYSICAL FACTORS AND DOSIMETRY
Sondhaus,
C.A.;
Bond, V.P.
109)
IN THE MARSHALL ISLAND RADIATION EXPOSURES
Naval Radiological Defense Lab.,
San Francisco
Publication Date: Dec. 1955
26 p.
Primary Report No.: WT-939(Del.)
Note: Decl. with deletions Sept. 15,
4.1
of
QUANTITY
OPERATION CASTLE
1959. Addendum Report for Project
Journal Announcement: NSA14
Availability: NTIS
Document Type: Report
50035496
Language: English
The physical factors and dosimetry of the fall-out on the Marshall