Assertion: mineral cryolite | /r/CapableOf | start in late eighteenth century
Facets:
Source sentences:
text: It was mined here starting in the late eighteenth century until the mine closed in the early 1960 s. Cryolite was used as a flux in the processing of aluminum.
text: It was mined here starting in the late eighteenth century until the mine closed in the early 1960 s. Cryolite was used as a flux in the processing of aluminum.