Eighty-three years ago today, on August 20, 1942 (July 9, 1942 in the lunar calendar), plutonium in visible quantities was first isolated at the University of Chicago's Metallurgical Laboratory. G.T. Seaberg (1912-) led the team working on plutonium production technology at the Manhattan Project. He is known as the father of plutonium. Plutonium was discovered at the University of California on February 23-24, 1941, and plutonium in visible quantities was first isolated at the University of Chicago's Metallurgical Laboratory on August 20, 1942. The first atomic bomb in the Manhattan Project was a plutonium-powered test bomb, and the third atomic bomb dropped on Nagasaki, "Fat Man", was also a plutonium bomb. In 1951, he and E.M. McMillan (1907-1991) won the Nobel Prize in Chemistry for their discovery and study of transuranic elements such as plutonium. In 1961, he was appointed chairperson of the US Atomic Energy Commission. Comments: Technology has once again demonstrated its power