1945 List of people in Hamilton's group as of January, 1945: Chemists: Dr. Roy Overstreet Dr. Louis Jacobson Physiologists: Mr. Kenneth Scott Miss Dorothy Axelrod Mr. Henny Lanz Mr. Robert Givens Miss Josephine Crowley Biochemists: Dr. Douglas Copp Dr. David Greenberg (consultant) Technicians Mr. Leo Herrera Miss Marion Chace Miss Elizabeth Cuthbertson Miss Wylda Hammond Mr. Lester Van Middlesworth A memofrom John Lawrence informed Hamilton that his patients were complaining of an adverse reaction to the new P32 injections; was there a heavy metal included in this preparation? (Aug 19, 45) Hamilton sent a request to Captain Robert L. Miller, the Area Engineer in Berkeley. To survey the metabolic properties of the heavy elements, he wanted Ac237, Th230, py 231, 95241 | and 96246 to be made available to his group at Berkeley. These materials would be employed for a detailed investigation of their metabolic behaviorin animals, and, if circumstances permitted, in man. (Dec. 27,45) In 1946, he sent the Area Engineer, attention Russell Ball, a request for radioactive isotopes u232, Pu238, and Ac227for tracer research in man. Ac23? was part of the approved program for work on Project 48A-Div | (Nov 15, 46). Russel Ball, on behalf of AEC, sent notice in 1947 that approval for reports which deal with human experiments was being withheld for the time being (Feb 12, 47). 1946 Hamilton sent a summary of work accomplished and projected to Captain Joe W. Howland regarding the Pu projects and the inhalation experiments using oxides as well as soluble compoundsof radioelements suchas yttrium, zirconium, and columbium, ruthenium, cerium, and praseodynium. Also projected were tracer studies in humans using radium, actinium, uranium, americium,and curium,as well as tracer studies in humansusing the most importantof the long-lived fission products. The summary was routed to Col. E.B. Kelly, Prof. EO. Lawrence, Col. S.L. Warren, Mr. K. Priestley, Dr. R.S. Stone, Dr. J.H. Lawrence, and the File. This list was crossed out and replaced with a handwritten one: Area Engineer, Prof. E.O. Lawrence, Dr. J.H. Lawrence, Mr. R.M. Underhill, and Mr. K. Priestley. (Apr 23, 46) Lawrence Berkeley Laboratory Archives and Records Office Human Radiation Experiments Search and Retrieval Project Anna Berge Research Notes Electronic DocumentTitle: Bancroft/EOL April 4, 1994 2

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