ise
and physical properties, their relation to plant distribution,
and the distribution of radioactive materials in soils, plants,
and ground water,
Field work consistedof reconnaissance surveys
of Rongelap, Eniwetok, and Kabelle Islands, followed by detailed
examination of soil profiles and collection of soil samples,
11. An integral part of the Rongelap ecology study is the
continuing program of monitoring the foodstuffs of the natives,
This serves as a check on the wdioisotopes ingested by the
natives and also provides information required for food chain
studies,
12, Thirteen field rats collected on Rongelap Island
during this trip were assayed for strontium 90 content of bone,
The. values obtained ranged from 268 to 926 strontium units,
with an average value of 443,
One pig bone was obtained, which
gave an assay of 480 strontium units.
13. A second field trip was plenned for September 1958,
A section.)
DOE ARCHIVES
TREATMENT OF RADIATION DAMAGE (UNCLASSIFIED)
14, Studies continued at the Oak Ridge National Laboratory
cn the treatment of radiation injury by bone marrow transplants,
In an experiment conducted on bone marrow cells in suspension
the cells were protected from a dose of 800 roentzens of
x-irradiation by removing most of the oxygen in the cell
suspension just before irradiation,
Protection was judged ty
the ability of the irradiated marrow cells to promote recovery
{in mice exposed to a lethal dose of radietion,
15, Various chemical compounds were administered to mice
in an effort to suppress the reaction which prevents the
successful transplant of foreign bone marrow,
- 61 -.—
MOS Fed CSN Or Geet eee
Nene of these
Fart ViItl