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  2. Plutonium - Wikipedia

    en.wikipedia.org/wiki/Plutonium

    Plutonium is a chemical element; ... Enrico Fermi and a team of scientists at the University of Rome reported that they had discovered element 94 in 1934. [67]

  3. Joseph W. Kennedy - Wikipedia

    en.wikipedia.org/wiki/Joseph_W._Kennedy

    Joseph William Kennedy (May 30, 1916 – May 5, 1957) was an American chemist who co-discovered plutonium, along with Glenn T. Seaborg, Edwin McMillan, and Arthur Wahl. During World War II , he led the CM (Chemistry and Metallurgy) Division at the Manhattan Project 's Los Alamos Laboratory , where he oversaw research onto the chemistry and ...

  4. Timeline of nuclear weapons development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_nuclear...

    1941 – February – Plutonium discovered by Glenn Seaborg and Arthur Wahl at the University of California, Berkeley. 1941 – May – A review committee postulates that the United States will not isolate enough uranium-235 to build an atomic bomb until 1945. [6]

  5. Synthetic element - Wikipedia

    en.wikipedia.org/wiki/Synthetic_element

    Plutonium (Pu, atomic number 94), first synthesized in 1940, is another such element. It is the element with the largest number of protons (atomic number) to occur in nature, but it does so in such tiny quantities that it is far more practical to synthesize it. Plutonium is known mainly for its use in atomic bombs and nuclear reactors. [4]

  6. Ralph A. James - Wikipedia

    en.wikipedia.org/wiki/Ralph_A._James

    The laboratory had large amounts of plutonium (discovered in 1940–41) that was being produced at the Hanford Site to make nuclear weapons. This allowed them to discover two new elements, although the difficulties for study and isolation were great.

  7. When telling the history of plutonium, tell the full story ...

    www.aol.com/telling-history-plutonium-tell-full...

    Letters to the editor on the history of plutonium, Project 2025, ageism on the Benton Commission, Trump, syphilis, drug laws and Hanford. | Opinion

  8. Karen Silkwood's sudden death unpacked in ABC documentary - AOL

    www.aol.com/news/karen-silkwoods-sudden-death...

    Fifty years ago, the death of a 28-year-old plutonium plant worker and whistleblower in Oklahoma -- a death many found mysterious and sparked decades of speculation -- shocked the nation. The ...

  9. History of nuclear weapons - Wikipedia

    en.wikipedia.org/wiki/History_of_nuclear_weapons

    The weapons envisaged in 1942 were the two gun-type weapons, Little Boy (uranium) and Thin Man (plutonium), and the Fat Man plutonium implosion bomb. In early 1943 Oppenheimer determined that two projects should proceed forwards: the Thin Man project (plutonium gun) and the Fat Man project (plutonium implosion).