Assertion: cobalt's product | /r/HasProperty | primary
Facets:
Source sentences:
text: Cobalt is the primary product, which makes it rare among cobalt mines as most cobalt is mined as a byproduct with copper or nickel.
text: As you can probably guess from the name of the region in Zambia - the Copperbelt, cobalt is mined as a secondary product to copper that is dominant in the ore of this region.