Assertion: silicon | /r/HasProperty | refined for common uses
Facets:
value: as an ingredient in concrete
type: MANNER
value: in the manufacture of glass cookware
type: OTHER
Source sentences:
text: In its raw form, silicon is found in about a 25% concentration in sand, and is refined for common uses in the manufacture of glass cookware that retains heat well, in ornamental glass products of many varieties, and as an ingredient in concrete.