During World War II , Huizenga supervised teams at the Manhattan Project in Oak Ridge , Tenn. , involved in enriching uranium used in the atomic weapon dropped on Hiroshima in August 1945 . During his Argonne years , as a result of examining debris from the " Ivy Mike " nuclear test in 1952 , Huizenga was part of the team that added two new synthetic chemical elements , einsteinium and fermium , to the periodic table . Huizenga and his colleagues were at first unable to publish papers on their discoveries in the open literature , because of classification concerns relating to the nuclear test , but these concerns were eventually resolved and the team was able to publish in '' Physical Review '' and thus claim priority for their discovery . During his Argonne years he was one of the founders of the Gordon Research Conferences on nuclear chemistry , serving as chairman of the nuclear chemistry Gordon Conference in 1958 . He received a Guggenheim Fellowship in 1964 and took a sabbatical from Argonne to further his studies as a visiting professor at the University of Paris for the 1964-1965 academic year
Ivy Mike
Ivy Mike
John R. Huizenga