Bachelor, Trinity College, Dublin, Ireland, 1952; Doctor of Philosophy, U. Edinburgh, Scotland, 1955.
Research chemist, Medical Research Council, Exeter, Devon., England, 1956-1959;
lecturer, U. West Indies, Kingston, Jamaica., 1959-1964;
visiting scientist, National Institutes of Health, Bethesda, Maryland., 1964-1966;
laboratory chief, USDA, Beltsville, Maryland., 1966-1983;
section head, International Atomic Energy Agency, Vienna, Austria, 1983-1986;
research leader, USDA, Beltsville, 1986-1990;
senior manager, ABC laboratories, Columbia, Missouri, since 1991. Alternate member science technical advising committee Chesapeake Bay Research Consortium, Maryland., Virginia, Pennsylvania, 1987-1990. Member Interagy. Subcommittee on Water Quality, 1988-1990.
Vice-chairman IOCD Plant Chemistry Working Group, since 1988.
Fellow Royal Society Chemistry. Member American Association for the Advancement of Science, American Chemical Society (division chairman pesticide chemistry 1980, Burdick and Jackson International award for Pesticide Chemistry 1982), Association Official Analytical Chemists, Sigma Xi.
Married Roma Gaunt, September 24, 1949. Children: Peter Nicholas, Christopher David.