ae
WhatPrecautions Can Be Token Against Local Faliout?
The area affected by local fallout can be determined in advance on the basis of the vield of
the experimental device tested. the type of firing (ground ot water surface, atmosphere, underwater)
and the wind system in the firing zone. The method used to delineate this arca is based on observations from the Lrench or foreign test firings.
For example, the zone contaminated by local fallout from the explosion on February 13,
1960 at Reggane affected an clliptical arca 95 miles long and Y miles wade. oumide of winch the
radiation was under 0.01 rem, hour.* Three weeks later, the zone continued: at the sanic rate of
exposure, making allowance for the decrease in radioactivity, was only 12 nutes dong by domiles wide.
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iring Point S001 rem/hour
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9.4 mi.
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The firing zone at the Hammadiainstallations was not evacuated at the time of detonation.
It was located only nine miles northeast of the firing point.
.
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The experience gained makes it possible to assert that
the risks are thorourhiy known and that it is therefore eo. toa cad there
*Rem—Jhe rem fraentgen equivalent man) measures the amount
effects in man.
of radiation
theag premdices
drpederue ad