Addendum A NOTE ON THE VEGETATION OF THE NORTHERN ISLETS OF RONGELAP ATOLL, MARSHALL ISLANDS, MARCH 1959 B.S. BLUMBERG* AND R.A. CONARD @ Fosberg'? reported changes in the vegetation of the northern islets of Rongelap Atoll (observed in 1956) which he inferred might have been associ- and to re-examine the vegetation. A helicopter was available for transportation, which permitted general and detailed air examination as well as two short ground surveys. The northern islets were ated with the radioactive fallout that occurred on this atoll in 1954. During the medical survey of the Rongelap people’ carried out in March 1959, an Opportunity arose to visit someof theseislets estimated to have received a radiation dose of = 3000 r. The islets of Naen and Gegen were examined in greatest detail. The most striking feature observed from the air was the generally gray color of much of the vegetation, in contrast to its thee ; 7 ' : - 7 f ge NAEN 1. , ° te. KABELLE ID. 8 : a i 2. ce ' RONGELAP ATOLL | foo: hp. | + #: Opee 8, “yy MELLU I. 5: io: WEST |”ae PASS t if ” ¥ 1? 20° N 2 aK - 8. Jta, FeSO *, 4 GERELLE |. S v 11° 20°.N 2 = S oO 1 2 3 4 § N fi al si NAUTICAL MILES t: fy BUROK |. r a . * * 166° 50’ E %. ~ S hs >: 11° 10° N 166° 40’ E Es b a Lt & “ky SOUTH PASS 11° 10° N RONGELAP |. ARBARI. Figure A-1. Map of Rongelap Atoll showing position of majorislets. 85 1185635 147° E | in Bow piled, ope ANIELAP wa 3s OB awe a ! ter" oP CEJEN I, AY LOMUILAL I... 166° 40° € me. - “NationalInstitutes of Health, Bethesda, Maryland.

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