UNCLASSIFIED
Tec ALY CoAggIFICA, ON OF "='5 2aGe
.
REPORT DOCUMENTATION PAGE
Th AESTAICTIVE MARKINGS
"a FESORT SECURITY CLASSIFICA SCN
UNCLASSIFIED
ta SECURITY CLASSIFICATION AUTHORITY
N/A since Unclassified
3 DISTRIBUTION, AVAILABILITY OF 2EPORT
Approved for public release; distribution is
<b JECLASSIFICATION : QOWNGRAQING SCHEDULE
unlimited.
N/A since Unclassified
a AERFORMING ORGANIZATION AEPORT NUMBER(S)
6a
WAVE OF PERFORMING ORGANIZATION
5 MONITORING ORGANIZATION REPORT NUMBER(S)
WT-1602 (EX)
60 OFFICE SYMBOL
Sandia Corporation
(tf appicabie)
7a
NAME OF MONITORING ORGANIZATION
Defense Atomic Support Agency
de. ADDRESS .City, Stare, and ZIP Code)
7b ADORESS iCity, State, ana ZIP Code)
Albuquerque, NM
Washington, OC
da. NAME OF FUNDING. SFONSORING
780 OFFCE SYMBOL
ORGANIZATION
df applicable)
3¢. ADDRESS City, State, and ZIP Code)
3 PROCUREMENT .NSTRUMENT :OENTIFICATION NUMBER
") SOURCE OF FINDING VUMBERS
PAOGRAM
SLEMENT NO
V1
PROJECT
TASK
NO
WORK CNIT
NO
ACCESSION NO
Tike Ganeiude Secunty Classification)
OPERATION HARDTACK~PROJECT 2.14
Fallout Contamination from a Very Low Yield Burst, Extracted Version
It
rE SUidesk AUTHOR(S)
Cowan, M., dr.
‘Ja
Tree OF REPORT
t3b
“IME COVERED
FROM
TO
‘d
DA"2 OF REPORT Year, Manth, Day)
620508
1S
PAGE conyt
6 ourPLeMENTARY NOTATION This report has had sensitive military information removed in order to
provide an unclassified version for unlimited distribution. The work was performed by the
v7
Defense Nuclear Agency in support of the DoD Nuclear Jest Personnel
HELO
8
B
COSATI CODES
Cc ROUP
3
“3
SUB-GROWP
ReviewProgram
18 SUBLECT TERMS (Continue on reverse sf necessary and identify by biock number)
Hardtack
Fallout
Contamination
Low Yield Bursts
3 AdSTRACT .Cantinue on ceverse if necessary and raentify by block numoer)
tae
.
ae
The primary objective of this project was to determine the military significance of fallout
contamination from small-yield fission weapons.
The specific objectives were to (1) make the necessary measurements during Shot Fig to delin-
eate the fallout gamma-radiation field produced by a land-surface detonation of a fission
weapon; (2) use data collected to construct a fallout model for use with any wind pattern, and
evaluate extremes in militarily significant contamination intensities for the same yield range
and (3) define theattendant plutonium contamination problem.
A dynamic close-in fallout model is presented for yields of 1 to 100 tons, which accounts for
growth and drift of the cloud during its rise and is consistent with Fig measurements of
cloud shine and amount of activity deposited, together with dose-rate intensity as functions
of downwind distance.
-0 OSTRIBAUTLON AvaiLAgLITY OF AaSTAACT
MQ uNcLass.FigcOUNumiTes
C) same as 2etT
~23 NAME OF FESPONSIBLE INDIVIOUAL
Mark D. Flohr
00 FORM 1473, 84 maa
Conc ssers
61
AASTRAC™ SECURITY CLASSIFICATION
UNCLASSIFIED
22D TELEPMONE (include Area Code)
(202) 325-7559
33 ArR edition May be wsed unt! exnausted.
Ail atner editions are oesarere
22¢ OFF:CE SYMBOL
DNA/ISCM
SECURITY CLASSIFICATION OF THIS PAGE
UNCLASSIFIED