Assertion: iron | /r/HasProperty | smelted
Facets:
value: from its ore
type: OTHER
value: directly
type: MANNER
value: by heating the latter
type: MANNER
Source sentences:
text: When iron is smelted from its ore, it contains more carbon than is desirable.
text: Analysis of the slag showed that considerably more iron could have been smelted out of the ore, indicating that the workers processing the ore had not been skilled.
text: Dating back to antiquity, the first iron was smelted directly from iron ore by heating the latter in a forge with charcoal, which served both as a fuel and a reducing agent.