4O1LO24 OFFICIAL USE ONLY WT —938 OPERATION CASTLE — PROJECT 4.1 ADDENDUM Report to the Scientific Director EXPOSURE OF MARSHALLISLANDERS AND AMERICAN MILITARY PERSONNELTO FALLOUT Robert Sharp, LTJG, MSC, USN William H. Chapman, LT, MSC, USN Naval Medical Research Institute Bethesda, Maryland ’ MARCH 1957 REPOSITORY ION L- Peca p as The Medical Resear ch Cen ter Brookhaven Nation al Laboratory Up| ton, L. 1, New York couection Mag. BOX No. trem PD TVeHYt fa i ld e a , e s f at \ F|OLDER IPR me ns i — OFFICIAL USE ONLY