Bachelor of Science, Tokyo University, 1944. Doctor of Science, Tokyo University, 1961.
Technical official, Geological Survey Japan, Tokyo, 1944-1956;
chief research laboratory, Geological Survey Japan, Tokyo, 1956-1969;
senior staff, Power Reactor & Nuclear Fuel Corporation, Tokyo, 1969-1975;
manager information, PNC, Tokyo, 1975-1982;
adviser, Saskatchewan Engineering Company Ltd., Tokyo, 1982-1991;
executive, Sakamoto-Koei Company Ltd., Tokyo, 1992-1997. Research United States Geological Survey, Denver, 1963-1964. Exploration geologist International Atomic Energy Agency, Baghdad, Iraq, 1973.
Member uranium research committee Nuclear Energy Agency, International Atomic Energy Agency, Vienna, Austria, 1979-1978. Member Uranium Institute, London, 1976-1978. Board directors Institute Mineral Resources, Tokyo, since 1982.
Member Japanese delegate International Nuclear Fuel Cycle Evaluation, Vienna, 1977-1978. Director Institute Nuclear Economics, Tokyo, since 1982.
Member Atomic Energy Society Japan, Society Resource Geology, Mineralogical Society of America.
Married Fusako Shirakura, November 2, 1958. Children: Emiko, Tatsuhiro.