AY MEean) Project 2.64 = Fallout Location and Delineation by Aerial Survey a R. Graveson QRIECTIVES Participation in this shot was acheduled to obtain data which could be used to validate altitude absorption calculations. These air absorption factors are used to compensate sircraft dose rate readings to en equivalent wurface reading. SPRRATION This edditional project participation was requested and approved in June 1956, and was besed on non-interference with the ooIEEENara) operations scheduled soon after this shot. Dtls ¥ One project airereft was requested for 0900 arrival at Enivetok. After instellation of the project equipment an aerial survey ves scheduled (to include one pass over the ialands in the atoll, three passes over the lagoon, end an ares search over the open see out to 100 alles). De2: The aircraft was scheduled to rendesvous at Enivetok and repeet the open sea survey if warranted by the results on the previous day, All plotting and flight planning was to be done in the aircraft ty two project passengers. The flight plotting, rather than a central plot contral - wae possible since close correlation betveen more than one aircraft end also between sircraft and ghip elements vas not recuired. A helicopter was scheduled for Dt2 to perform surveys over two islands and open water at varying flight altitudes betveen 25 and 1,000 feet. A game spectrum enalyser and special survey neters were to be installed for these measurements of altitude absorption ooefficiente. BEST AVAILASLE COPY - 19 como"