Addendum A NOTE ON THE VEGETATION OF THE NORTHERNISLETS OF RONGELAP ATOLL, MARSHALL ISLANDS, MARCH 1959 B.S. BLUMBERG* AND R.A. CONARD Fosberg’’ reported changesin the vegetation of the northernislets of Rongelap Atoll (observed in 1956) which he inferred might have been associated with the radioactive fallout that occurred on this atoll in 1954. During the medical survey of and to re-examine the vegetation. A helicopter wasavailable for transportation, which permitted general and detailed air examination as well as two short ground surveys. The northern islets were estimated to have received a radiation dose of = 3000 r. The islets of Naen and Gegen were examined in greatest detail. The moststriking feature observed from the air was the generally gray the Rongelap people® carried out in March 1959, an opportunity arose to visit someoftheseislets color of muchof the vegetation, in contrastto its *National Institutes of Health, Bethesda, Maryland. | LOMUILALJ... 186° 40’ E | eaGQ GHEN |. OR oo fe wee. NAEN |. 167° E “oe ales ee 2” | RONGELAP ATOLL oo 4 0,4 fi 3 MELLU t. 2: nO! tp, i? Le WEST.” PASS mc 7 11° 20° N é a Pa gar: ae.O° GEBELLE |. 2,“WS - ma 0 1 2 3 4 5 11° 20° N N . NAUTICAL MILES 4: v. “f&DUROK I, a LF 3 aot “A vse | Pas — s 166° 50° E uh S 5: ie s D: Yo Tagh 166° 40’ E a &=tye? SOUTH PASS ARBAR|. RONGELAPI. Figure A-1. Map of Rongelap Atoll showing position of majorislets. Ly ca cD aed Cc? 85 cs o. ff eaneox I #: a cs So KABELLE |._“£). a - . 11° 10° N ANIELAP I. %. 11° 10° N 167° E