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UNCLASSIFIED

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Group 7.6 usin oxisting installations supplanented by various types
of portable radio equipment.

He also devised the coding and cipher

systoms to be used by Task Grows 766 in Operation SANDSTONE.

Lt.

(jg) David L. Flynn, USN actively assisted this work and also organ
ised the Radar Trachkdng system for the Lipoan Boat Fatrol which would
supply radioloical data for tho reentry of shipa inte the lareon after
the shots.
A cousiderable portion of the time aml effort of the Task Group
staff during the cruise fran Terminal Islami to Buwetok wis devoted

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to the develojment of an Operation Plan.

ANNEX E, the Operations

Annex, was largely devoted to an initial analysis of the radiclogical

safety requirements established by the Scientific Operating Man (sccp)
of Task Group 7.1

At a later date, it was founl advisable to replace

this annex with a more flexible "Operations Schedule."
~

ANNEX G, the

Technical Measurements Annex, conisineal a description of Uy of the
Service Tests being conducted at SANDSTONE.
these tosts are protective in nmiture,

It will be notal that

Many of the tests will produce

long tearm results in the deveiopnent of shtelding, biological studios,
ste. , and can appropriately be clissal as Nadiolorgical Defense Projects.

“rer projects, such as analysis of water, dirt and dust samples and
earatler surveys were primiwily pouttal toward the short tearm otjective
of prameting Radiological Safety within the Task Foree.

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& will be difficult to dissociate Radsafe and RadDef pro fjocts..
“Nevertheless, the aipnificance of the Raddafle pro fects to the success-

ul accomplishment of the nusaion shonld be cleirly reeennisead.
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