MAL Magyar Aluminum, the owners of the refinery, have said that between 40% and 45% of the sludge that spilled on Monday is iron oxide, which explains the rusty red colour.
Compania MAL Magyar Aluminum, proprietara fabricii, a declarat că între 40% şi 45% din noroiul deversat luni este oxid de fier, ceea ce explică culoare roşie ruginie.