↑   Estimates vary all over the world, but most sources provide a figure of 2–4kg of bauxite for every 1kg of alumina. Somewhere else, aluminum was gradually superseded by aluminium, which was approved as Global common by IUPAC in 1990. Strength: Steel is much better than aluminium, but specific aluminium alloys https://aluminium-greenhouse67788.boyblogguide.com/36310302/not-known-factual-statements-about-sheds-and-garages