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or stone house, and the basement of an average 1 esidence would
reduce the exposure to about one-tenth.
It has been stated that
shelter in an old-fashicned cyclone cellar, witht & covering of
earth three feet thick, would reduce the radiat
nm dose to about
1/5000.
3, Adequate food and water should be sto
sanitation me&sures taken to permit shelter oce
cays,
ed and proper
ancy for several
To the extent that concentration of evac
sanitation problems will be magnified.
es is necessery
In the i dividual home,
however, it should be noted that people may emer e from the
basement for a few minutes at a time without app eciably
increasing the hazard,
Precautions should be ta en to reduce the
possibility of contaminated material getting int
area.
the protected
Surface sources of drinking water, reserv {i and the
distribution system should be repeatedly checked for serious
radiological contamination and other pollution.
C. Operations
1. The greatly increased probability of a
radiation hazard makes it necessary that all civ
erious residual
defense programs
be re-evaluated and that necessary changes in operational plans be
made.
For the purpose of preliminary planning,
may be assumed
that a city struck by a high-yield weapon will hafPe & serious
radiological problem within the "D" ring of blastIdamage and that
continuing monitoring will be necessary to provid#
information for
operational guidance,
2, Certain fixed operational sites, such a#
and communications centers must be given special
consideration if operations at that location are
assembly areas
rotective
strict
necessity.
3. Decontamination may be required for cer
facilities
such as
communications
centers, water
in essential
mping stations,
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