Assertion: hafnium | /r/HasProperty | produced as byproduct
Facets:
value: during the purification of zirconium
type: TEMPORAL
Source sentences:
text: Hafnium is produced as a byproduct of making high purity Zirconium, where Hafnium is present as only 2% of Zirconium in Zirconium minerals.
text: Hafnium is produced as a byproduct during the purification of zirconium.