PRIVACY ACT MATERI AL REMOVED a this Headquarters. The discussion was oponed with from BRAVO presenting pistures which indiented why it was impossible for him to satisfy Project 9,1 requirements. Tho tremendous and swift growth of the cloud whila the clrcraft wore positioned at distances of 50 to 60 niles frm detonation point wore important factors, It appoarad that tho big problem surrounding positioning of these circreft at grocter distances entailed a control problem necessary for accurc.te positioning at H-Hour. Specifically, positive control from BOUNDARY C.RE was lost at aproximately 70 milos from Ground Zero in th desired quadrents. This meant that the actual control distance from BOUND.RY Tumi was approxtimately 100 niles. It was suggested, as a2 pcssible solution, that those alreraft could be positioned to greater distances, 100 to 125 nilos, and the conircl muld be handled by DIRTY F.CE (the 40C). If this could be accomlished, two of the aircraft, ono at 250 dogrees and 12,000 foot and tue othor at 240 degreos and 14,000 feet, would bo well within the control capability of DIRTY F..CE at all times, a distance cf apwos’ mately 80 miles. The base lino for triangulation reduction of data was 80 miles if these eirereft wore positioned 110 miles from detcnation point. Et was concluded thr: PEWTER ONE and FEWTER TM, in oxder oo accomplish the recuirements of Project 9.1, should be uncer the contre. of DIRTY F..CE. PEWTER ONE would be 290 — and 110 miles from Ground