number of Michigan graduates or fellows were involved with the Manhattan Project, chiefly with regard to the physical chemistry of the device. Robert F. Bacher, Ph.D., member of the Manhattan Project; professor of physics at Caltech; president of the Universities Research Association Lawrence Bartell before he had finished his studies he was invited by Glenn Seaborg to interview for a position working on the Manhattan Project. He accepted the job and worked on methods for extracting plutonium from uranium. Lyman James Briggs was an American engineer, physicist and administrator. Donald L. Campbell was an American chemical engineer. Allen F. Donovan worked for the Manhattan Project on the design of the shape of the Fat Man atomic bomb and its release mechanism. Taylor Drysdale earned master's degrees in nuclear physics and mathematics from the University of Michigan, joined the U.S. military, worked on the Manhattan Project, and retired from the U.S. Air Force as a colonel. Arnold B. Grobman Grobman began his post-secondary education at the University of Michigan in Ann Arbor, earning his bachelor's degree in 1939. From 1944 to 1946, he was a research associate on the Manhattan Project, later publishing "Our Atomic Heritage" about his experiences. Herb Grosch received his B.S. and PhD in astronomy from the University of Michigan in 1942. In 1945, he was hired by IBM to do backup calculations for the Manhattan Project working at Watson Scientific Computing Laboratory at Columbia University. Ross Gunn was an American physicist who worked on the Manhattan Project during World War II. Isabella L. Karle, was x-ray crystallographer Jerome Karle was an American physical chemist. James Stark Koehler was an American physicist, specializing in metal defects and their interactions. He is known for the eponymous Peach-Koehler stress formula. Emil John Konopinski (1933, MA 1934, Ph.D. 1936), patented a device that made the first hydrogen bomb with Dr. Edward Teller; member of the Manhattan Project John Henry Manley was an American physicist who worked with J. Robert Oppenheimer at the University of California, Berkeley before becoming a group leader during the Manhattan Project. Elliott Organick chemist, Manhattan Project, 1944-1945; Carolyn Parker was a physicist who worked from 1943 to 1947 on the Dayton Project, the plutonium research and development arm of the Manhattan Project. Franklin E. Roach was involved in high explosives physics research connected with the Manhattan Project Nathan Rosen was an American-Israeli physicist noted for his study