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the UBSCurtiss which was near site sero) 1¢ was poseible to use

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i yads at Yan end Tare, and aleo use Ran as « working

area forstoring, sorting ant ascenbling material and gear. The
’ project weberparticular pressure in meting the readinses date

was profect3.6 which, in addition te recovery of instrusented
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fromReuse, placed nine instrumented buoys for Union.
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sims oneday021 projects. for which it was necessary activated
their atdtions,. 411 projects were ready as planned, The ships
@rocuated the Bgoon shortly after noon and took position to the

southwest, 4% abort 8860 a Bi~how delay without reentry to the
lagous was announced beceuse of predicted adverse weather, On

the next morning a helicopter 112+ was made from the carrier to
project 1.@ to reactivate its glock actuated atations, At
$20, an indefinite delay wes announced, a helicoptay mission wes

flows tedisarm the device, and the ships reentered the legoon,

Until 28 April, the days wore succesaively ebserved as Union minus
two daya withthe unéerstanding that the shet might go on 24 hours

notice, At 3830 on 26 April, word was roosived that tho following

:

day, 80 April, wae desi mated shet day to take advantage of ucoted weather change, in syite of the lateness ofthe announcement, all DOD rrejectsa were ready by 1730, All ships except the

USS Ratos (which waited for the arming party to return at 2300)
evacuated the lagoon by 1986.
;

wt Union was detenated at 0610
mm 26 April, At 1430, a radsafe
¢daxsuge aurvey was wade by
helicopter. This ouwvey revealed that the Tare airstrip had
boulders and rubble threwn up on it by wave action, the Dog-Georgs
somples had been eampletely imundated by wove action, and thet the
eastern islands from Ceorge around to Oboe had suffered
pertial

inundation, In addition, extremely high (order of 20 B/nr)

vadiation levels were reported for the Dog-George complex, and
moderately high levels for How and Han, The ships reentered the
iagoon and anghored near Nan at 1626, Limited recovery was

carried cut that afterncon, The operations on tho following dsys
were tailcred to effect recovery from Unior prior to the detonation of Yankees at the same site zero with a coheduled rescincas

date of Unien plus 8, to instrument for partinipetica in Yan‘ee,

and te avoid radiation everdorzage of persoune] engaged in these

operations.

To accomplish the preceding it was nooeseary for

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:

Select target paragraph3