I
2. RADIATION EXPOSUrES
2.1 magattnde
aunt
Only Re@ Flight Aireraft approached the planned eperational
exposures.
Failere te attain the planned exposure in the other flights
ie reflected in the lower sample sizes which they obtained, Rea Fiight
exposures were fn the Gieito four reengten level, Waite Flight im the
one-half to one reengten level and Blue Flight in the twoeto four fenths
reengten Level.
Besemse the afreraft were serefully hané polished by the
FOG personnel, the sockpit background was very mech lower than expected,
The total radistion exposures were therefore approximately AOS less than
haf deen anticipated.
In view of the fact that these sireraft saw radi-
ation intensities in execss of 500 R/ar, the lew exposures achieved by
Red Flight should be sonsidered o testimony te the skill of its pilets,
2.2 RBffeetiveness gf Shielded Flicht Clothing
Use of the shieléed flicht clothing by Re Flight epparentily gave
abcuat ea four to five-fold reduction in radiation exposures, The effect
Gia not appear te be significant for White Flight, although for Blue
Flight there again appeared to be a significant protection, The protection
afforded te Red Flicht apparently ecorresponds te evidence that a considerable
fraetion ef the radiation finx in the cleud during Red Flight penetrations
may be due to the decay of U~? ahich gives a 79 Mev game ray. This evidense
was gained from an analysis of the @eay rate of reported peak radiatien
intensities in the sleué,
3. SPRUCIONAL umes
Joi Altitude Performance of Sempling Aircraft
The boab burst formed am upper eloud shout 100 miles in diamrter
with a stem im the eenter approximately 30 miles in diameter,
a Exot 2, pe spreee
A white