MONTHLY STATUS AND PROGRESS REPORT
Division of Biology and Medicine
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MONTH OF JANUARY 195)
Weapons Test Activities
-
Monitoring Program for Operation CASTLE. QB
rogram
been completed for the operation of a world-wide monitoring
_to measure and collect radioactive ‘fall-out during the forthgoming
test series in the Pacific.
A network of 150 stations has bden estab-
lished throughout the world, with concentrated networks in
the United States and in the Pacific near ground zero. Autogatic,
Kusaie, Rongerik, Majuro, Truk, Yap, Wake, Iwo Jima, Midway,
and Guam. Monitoring of these islands during past test seri¢s showed
of air-borne scintillation instruments. Based on the findi
ground monitors, negative flights may be eliminated and fli
rescheduled to operate more effectively. Collections of f
rial will also be made aboard severai hundred United States
traveling the North Pacific ocean routes.
This will permit
of fall-out which is carried by winds to the open sea. The
areas of the Pacific Islands in relation to open water make
to predict the fall-out patterns accurately, and observatio
open ocean areas will yield more complete information.
Procedures for monitoring radioactivity were initially
by the Commission in 1951 in the northeastern states during
test series. In 1952 the program had been expanded from a
network (TUMBLER-SNAPPER series) to a world-wide network
operation during the IVY and UPSHOT-KNOTHOLE series. A ske
is maintained continuously between test series. The monito
whi
was in
ton network
program
provides the Commission with documentary evidence concerning the amount —
and distribution of fall-out from nuclear weapons tests for use in
evaluating radioactive contamination for immediate, as well as long-
.
range, effects.
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