G. B. Pegram
George Braxton Pegram was an American physicist who played a key role in the technical administration of the Manhattan Project. He graduated from Trinity College in 1895, and taught high school before becoming a teaching assistant in physics at Columbia University in 1900. He was to spend the rest of his working life at Columbia, taking his doctorate there in 1903 and becoming a full professor in 1918. His administrative career began as early as 1913 when he became the departments executive officer. By 1918, he was Dean of the Faculty of Applied Sciences but he resigned in 1930 to relaunch his research activities, performing many meticulous measurements on the properties of neutrons with John R. Dunning. He was also chairman of Columbias physics department from 1913 to 1945.
George Braxton Pegram was born in Trinity, North Carolina, one of the five children of William Howell Pegram, a professor of chemistry at Trinity College , and Emma, daughter of Braxton Craven, the colleges founder and first president. He had two brothers and two sisters, all of whom graduated from Trinity College. His upbringing in the academic atmosphere of the campus left him with an appetite for careful methodical work and an inherent diplomacy.
Source: Wikipedia