In the [[Heian period]], iron produced in Japan was produced chiefly from sands, rather than ore, in a process called ''tatarabuki'' iron production. This took place chiefly in [[Bizen province]].<ref>Gallery labels, ''Jidai wo tsukutta waza'' 時代を作った技 exhibition, National Museum of Japanese History, July 2013.</ref> | In the [[Heian period]], iron produced in Japan was produced chiefly from sands, rather than ore, in a process called ''tatarabuki'' iron production. This took place chiefly in [[Bizen province]].<ref>Gallery labels, ''Jidai wo tsukutta waza'' 時代を作った技 exhibition, National Museum of Japanese History, July 2013.</ref> |