Assertion: pm | /r/HasProperty | characterized at oak ridge national laboratory
Facets:
value: in 1945
type: TEMPORAL
value: by analysis
type: MANNER
Source sentences:
text: Promethium was first produced and characterized at Oak Ridge National Laboratory in 1945 by the separation and analysis of the fission products of uranium fuel irradiated in a graphite reactor.
text: Promethium was first produced and characterized at Oak Ridge National Laboratory
text: Promethium was first produced and characterized at Oak Ridge National Laboratory in 1945 by the separation and analysis of the fission products of uranium fuel irradiated in a graphite reactor.