Assertion: pig iron | /r/HasProperty | remelted
Facets:
Source sentences:
text: Around 1200 BC the Chinese developed a method of smelting the rocky ore into pig iron, which was then remelted and poured into molds (cast) to form cast iron.
text: Cast iron begins its life as pig iron, which is remelted and often combined with large amounts of scrap iron and sometimes with steel.