Insimbi yexhaphozi eyomisiwe — amaqhuzu e-oxyhydroxide yensimbi aqoqwa emaxhaphozini, emahlanzeni nasezindaweni ezingaphansi kwemifudlana. Kwakuwumthombo oyinhloko wensimbi wokuncibilikisa kweziko eliphansi ngesikhathi sama-Viking, ngenxa yezinga layo eliphansi lokuncibilika nokutholakala kwayo kalula eNyakatho Yurophu. Kumele yomiswe futhi igazingwe ngaphambi kokuncibilikiswa ukuze kususwe umswakama nezinto eziphilayo.