Assertion: plutonium | /r/HasProperty | isolated on december
Facets:
value: by joseph w. kennedy
type: OTHER
value: by dr. glenn t. seaborg
type: OTHER
value: by edwin m. mcmillan
type: OTHER
Source sentences:
text: Plutonium was first produced and isolated on December 14, 1940, by a deuteron bombardment of uranium-238 in the 1.5 metre (60 in) cyclotron at the University of California, Berkeley.
text: Plutonium (specifically, plutonium-238) was first produced and isolated on December 14, 1940, and chemically identified on February 23, 1941, by Glenn T. Seaborg, Edwin McMillan, Joseph W. Kennedy, and Arthur Wahl by deuteron bombardment of uranium in the 60-inch (150 cm) cyclotron at the Berkeley Radiation Laboratory at the University of California, Berkeley.
text: Plutonium was first produced and isolated on December 14, 1940 by Dr. Glenn T. Seaborg, Joseph W. Kennedy, Edwin M. McMillan, and Arthur C. Wahl by deuteron bombardment of uranium in the 60-inch cyclotron at the University of California, Berkeley.