Assertion: cerium | /r/HasProperty | produced
Facets:
value: by crushing and grinding mineral compounds
type: MANNER
value: by crushing and grinding various minerals
type: MANNER
Source sentences:
text: Cerium is produced by crushing and grinding various minerals and then the pure metal is extracted with a specific extraction technique using sulfuric acid, sodium hydroxide, ammonium oxalate and nitric acid.
text: Cerium is produced by crushing and grinding mineral compounds and treating them with concentrated sulfuric acid.