All indigenous African iron smelting processes are variants of the bloomery process.

This sounds illogical, as pigs have ineffective sweat glands, but the term is allegedly derived from the iron smelting process.

The archaeologists from the Universiti Sains Malaysia found the remains of an iron smelting site, tools to pump oxygen into the iron smelting process, rooftops of buildings, beads and pots, said Mokhtar Saidan, a professor and leader of the team.