Charles Allen Thomas  Charles Allen Thomas (February 15, 1900 – March 29, 1982) was a noted American chemist and businessman, and an important figure in the Manhattan Project. He held over 100 patents. A graduate of Transylvania College and Massachusetts Institute of Technology, Thomas worked as a research chemist at General Motors as part of a team researching antiknock agents. This led to the development of tetraethyllead, which was widely used in motor fuels for many decades until its toxicity led to its prohibition. In 1926, he and Carroll A. "Ted" Hochwalt co-founded Thomas & Hochwalt Laboratories in Dayton, Ohio, with Thomas as president of the company. It was acquired by Monsanto in 1936, and Thomas would spend the rest of his career with Monsanto, rising to become its president in 1950, and chairman of the board from 1960 to 1965. He researched the chemistry of hydrocarbons and polymers, and developed the proton theory of aluminium chloride, which helped explain a variety of chemical reactions, publishing a book on the subject in 1941. From 1943 to 1945, he coordinated Manhattan Project work on plutonium purification and production. He also coordinated development of techniques to industrially refine polonium for use with beryllium in the triggers of atomic weapons in the Manhattan Project's Dayton Project, part of which was conducted on the estate of his wife's family. Shortly before the war ended, he took over the management of the Clinton Laboratories in Oak Ridge, Tennessee. Monsanto pulled out of Oak Ridge in December 1947, but became the operator of the Mound Laboratories in 1948. Secretary of State Dean Acheson appointed Thomas to serve on a 1946 panel to appraise international atomic inspection, which culminated in the Acheson–Lilienthal Report. In 1953 he was appointed as a consultant to the National Security Council, and served as U.S. Representative to the United Nations Atomic Energy Commission. Charles Allen Thomas was born on a farm in Scott County, Kentucky, the son of a Disciples of Christ minister, Charles Allen, and his wife Frances Carrick Thomas. His father died when he was six months old, and he and his mother went to live with his grandmother in Lexington, Kentucky, just across the street from Transylvania College. While living on the farm he was home schooled by his mother and grandmother. After moving to Lexington he attended Hamilton College's preparatory school, and then Morton High School. When he was 16, he entered Transylvania College, which awarded him his Bachelor of Arts (AB) degree in 1920.