Since Seaborg and his colleagues had perfected McMillan's oxidation-reduction technique for isolating neptunium, he asked McMillan for permission to continue the research and search for element 94.
Como Seaborg e os seus colegas perfeccionaran os métodos de McMillan de oxidación-redución para illar o neptunio, Seaborg solicitoulle a McMillan continuar coa colaboración de investigación no elemento 94.