Task: Question Generation
Input (English): Passage: The new research establishment was formed in February 1942, and named the "Metallurgical Laboratory" or "Met Lab". Some real metallurgy was carried out, but the name was intended as a cover for its activities. The University of Chicago had been considering establishing a research institute into metals, and indeed would do so after the war, so its creation attracted little attention. Compton's plutonium project then became known as the Metallurgical Project. The Metallurgical Laboratory was administered by the University of Chicago under contract to the Office of Scientific Research and Development (OSRD).Over 5,000 people in 70 research groups participated in Compton's Metallurgical Project, also known as the "Pile" or "X-10" Project, of whom some 2,000 worked in the Metallurgical Laboratory in Chicago. Despite the good salaries being offered, recruiting was difficult. There was competition for scientists and engineers from other defense-related projects, and Chicago was expensive compared with university towns.Norman Hilberry was associate director of the Metallurgical Project, and Richard L. Doan was appointed the Director of the Metallurgical Laboratory. While Doan was an able administrator, he had difficulty being accepted as the head of the laboratory, since he was not an academic. On 5 May 1943, Compton replaced him with Samuel K. Allison, and appointed Henry D. Smyth as associate director. Initially there were three physics groups, headed by Allison, Fermi and Martin D. Whitaker. Frank Spedding was in charge of the Chemistry Division. He was later succeeded by Herbert McCoy, and then by James Franck. Compton placed Robert Oppenheimer in charge of the bomb design effort in June 1942. In November 1942, this became a separate project, known as Project Y, which was located in Los Alamos, New Mexico.After the United States Army Corps of Engineers took over the Manhattan Project in August 1942, the Manhattan District coordinated the work. From 17 February 1943, Compton reported to the director of the Manhattan Project, Brigadier General Leslie R. Groves, Jr., instead of the OSRD S-1 Section.  The Manhattan District assumed full responsibility for the Metallurgical Laboratory contract on 1 May 1943. Captain J. F. Grafton was appointed the Chicago Area Engineer in August 1942. He was succeeded by Captain Arthur V. Peterson in December 1942. Peterson remained until October 1944. Captain J. F. McKinley became Chicago Area Engineer on 1 July 1945.
Output (English): What are the last names of the initial people who led the three physics groups in the project known as "X-10"?