we
-9Eniwetok test has traveled eastward across the ocean,
will have become a dispersed,
it
invisible air mass, which
has lost much of its original radioactivity.
As a result, the levels of radioactivity in the
United States from the Eniwetok tests are expected to be
low.
Levels of 10 or more times the normal background may
be reached in some localities at some times.
However,
these increases in background will be temporary, and will
result in exposure far below amounts which would affect
the health of exposed persons.
As it has in the past, the Commission will conduct
extensive radiological monitoring operations within the
United States during the test series.
These operations
are not conducted in the expectation of possible hazard,
but for scientific purposes and to keep the public informed
on levels of radioactivity.
Two types of monitoring operations will be conducted within the United States.
One will consist of a
network of U.S. Weather Bureau stations, which collect fallout samples at selected locations throughout the nation.
The collection method is simple.
A sheet of film covered
with an adhesive is exposed outdoors on a tray for 24 hours,
and then is mailed to the Commission's New York Health and
Safety Laboratory.
There, the sample is reduced to ashes,
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