Assertion: alumina | /r/HasProperty | subjected to electric current
Facets:
value: according to the american chemical society
type: OTHER
Source sentences:
text: Finally, in 1886, a French engineer named Paul Heroult and an Oberlin chemistry graduate named Charles Hall independently invented a process in which aluminum oxide is melted in cryolite (sodium aluminum fluoride) and subjected to an electric current, according to the American Chemical Society.