we 513 vay a) Projec: 6.3 - Fffects of Atomic "xplosions on the Ionosphere - M. Hawn Pir The objective of Project 45,3 {8 to obtain data on the effects of bach wield nuclear explosions on the Tonosvhere, Principally, to ine Vestipate the area of abso-stion, probably que to the high altituie radioastive pavti-les, ani to stuly the affact of orlentation relative to the earth’s magnetic field on > layer effects. TYSTREMENT ATION The syatem comprises: ™wo Tonos~here retoriers, type Ca", ope-ating om pulse trans mission, inatalled in £ ton trailer wans, one located at Songerik Atoll anid one located at Kusaie in the Caroline Islands. One Ionsaphere recorier, type “-3, operating on pulse trenamission, inatalted tn a C9 plane base! at Mnivetok Island, RESULTS Al) stations operated success*ully iuring thie test. Grount re coords were taken by the ©.%7 as it was granite! at Kvejalein while a new engine was being installed. There were no noticeable effects on the fonosphere from this test, BEST AVAILABLE COPY =-~l7 «-