Assertion: molybdenum | /r/HasProperty | primary product
Facets:
value: at two of them
type: LOCATION
Source sentences:
text: As mentioned, the metal is often produced as a by-product of copper and other metals, and that’s evident when looking at US output stats: in 2017, molybdenum was produced at seven mines in the country, but was a primary product at just two of them.