http://www3.nhk.or.jp/nhkworld/english/tv/journeys/archives20110803.html Journeys in Japan: "Kazuno, Akita Pref." - Mining a vibrant culture
http://www.fastcompany.com/most-innovative-companies/2011/profile/kosaka-smelting-and-refining.php Kosaka plant
http://www.dowa-eco.co.jp/en/recycle.html Dowa eco-system
http://cgi4.nhk.or.jp/eco-channel/en/movie/play.cgi?movie=e_nl_20101206_0164 recycling rare metals, on NHK World
http://www.goldnscrap.com/index.php?option=com_content&view=category&layout=blog&id=38&Itemid=50 recupero casalingo!
http://www.raecycle.it/italian/impianti-sud.php?iExpand1=49 impianto Priolo... non riciclano un cazzo!
