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high doses are required to immobilize the larvae completely, bud
only
tion were sufficient in most instances to prevent maturation to
and reproduction following their subsequent ingestions by rats.
ult forms
Somewhat
about 5,000 roentgens of X rays or 10,000 roentgens of cobalt 6Q
higher doses are required to ensure complete sterilization of tlle
nae. Examination of adult females which had been subjected as
irradia-
trichi-
Jarvae to
the cobalt 60 gamma ray dosages (equivalent to “sterilizing dosds") showed
complete disorganization of the sexual apparatus.
Aa etter ere oe nee
It is hoped that these studies may lead to a practical u e of waste
fission products in lowering the infectivity of trichinous pork and so
contributing to the control of human trichinosis, an important
health problem.
Electron microscopy of irradiated mammalian cells. A Un
of Minnesota research group recently reported promising develop
the use of electron microscopy of ultra-thin tissue sections in recording
radiation damage. The early work has been on gastric and duode al mucosa
of mice, fixed rapidly in vivo with osmic acid within a minute fter termination of very brief and intense X-ray exposures:
The micro aphs show
highly. localized damage to cell structures, apparently resulti
from the
action of ions released by the radiation; however, much additiogfal work
must be done in order to substantiate this finding.
Civil Defense
e
FCDA-AEC briefings. A classified briefing for Mr. Val rperson
newly appointed FCDA Administrator, and eight of his top staff
on April 8.
fas held
The briefing was conducted by Chairman Dean and followed
generally the pattern of previous White House and Cabinet brieflngs, the
purpose being to acquaint Mr. Peterson with AEC programs and deffelopments
pertinent to the national civil defense effort.
A reciprocal meeting was arranged by liaison offices of Poth agencies
on April 23 at which time the FCDA program and objectives were Fxplained
to the Commission. Mr. Justice M. Chambers (in Mr. Peterson's kkbsence)
gave a presentation depicting the possible magnitude and effect of an
atomic attack on the United States. He described the obstaclesj faced by
FCDA in attempting to minimize casualties and damage and their proposed
program for carrying out their responsibilities in event of attack.
Designation of AEC representative on protective construdtion. In
response to an invitation by the Administrator, FCDA, to desigrfte an AEC
representative to meet with FCDA staff members on the problem
guidance
on certain measures of protective construction, Chairman Dean
April 22,
1953, named R. L. Corsbie, Chief, CDLB.
Professor H. L. Bowmarf will be
available for consultation pending Mr. Corsbie's release from
ties with
the Test Organization at Nevada Proving Grounds.
Loans of radiation detection instruments and radiation
dgources. The
loan of radiation detection instruments to the Texas State civ¥l defense
34
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