Relevant Rongelap studies that were supported by DOE at Brookhaven National Laboratory (Upton, Nen York 11973), were discussed with Dr. Uilliam H. Adams, (Hedical Department), Dr. Robert Conard and Hr. E. Lessard (Safety & Environmental Protection Division). The citation of their work in this Report has been checked by therrt. It was considered important and efficient to bring together all of the data that are now available rather than to restrict this report to the limited data on which DOE-1982 vas based. Additional information from DOE-supported laboratories that became available after DOE-1982 had been Also, written was made available to us by Adams, Lessard and Robison. we have taken a number of samples in the field and have had them analyzed independently. Other sources of information in the international literature have been used and are cited in the text. Ve have also discussed from time to time various matters relating to the Report, or the progress made in developing it, with the Rongelap people or their representatives, including Senator Jeton Anjain, P.O. Box 1006, Hajuro, Republic of the Harshall Islands, 96960. Ue have also consulted lfr. Peter Oliver, Special Assistant for Compact Affairs, Republic of the liarshallIslands, P.O. Box 15, Majuro, 96960. The Reassessment Report (the present document) was written by Henry I. Kohn in his capacity as Referee under contract with Rep14ar. The opinions and statements made are therefore his responsibility. The task, however, was greatly facilitated by employing an international panel of experts, selected so as to represent a variety of overlapping specialties that would cover the problems under examination. If they chose to do so, the consultants who were still in disagreement with the final draft of the Report (having discussed earlier versions with Dr. Kohn), were asked to urite brief notes on their own views to be mentioned in the text and to be included as footnotes or among the “Notes to the Text”. The absence of such comment, however, does not necessarily indicate agreement with the entire text. A major commentary by Dr. Bertell and Mr. Franke is given in Note 13.