» UNCLASSIFIED eo 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 ta ee . ya = Wes { 7 ai bf 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. In senerl & 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. - LO ~- am -- “ Li, mae Mee er ca - ot oa - eee otek mown Who ower . OT aa ell 8 t. wT ow