me ee ee ae re se implement the human diet and bone svudies a continued to pursue these and other invest the basic aim cf estimating the exposure o radicactive fallout. His strong interest in and involvement with the 0 02s Qs be United Nations Scientifie Committee on the effectSs ofr Atomic Radiation, the National Committee on Radiat Protection ana Measurements, and the Federal Ra Couneil, exposed his scientific Skiils as weil good mimor to scientists from many areas of the a His Joe was co-editor of th HASL "Quarterly" . advice and many contribution will be sorely missed. He was an independent thinker whose ideas and btarents were sougnt in almost every endeavor at HASL. fa Nae eee rte ere ge ry ee eea me ee ee ee Se ee met te ee ee ee wate peree eR ee eee ee eee ewe nn Joseph Rivera suffered January 31, 1970. We are grea of our good friend and colleague. Soc the Health and Safety Laboratory in 1>