Assertion: boron | /r/HasProperty | extracted
Facets:
value: from kernite
type: LOCATION
value: chiefly
type: DEGREE
value: from borax
type: OTHER
Source sentences:
text: It is extracted chiefly from kernite and borax and used in flares, propellant mixtures, nuclear reactor control elements, abrasives, and hard metallic alloys.
text: It is extracted chiefly from kernite and borax and used in flares, propellant mixtures, nuclear reactor control elements, abrasives, and hard metallic alloys.