Explanatory notes
… Metal containing by weight at least 99 % of aluminium, provided that the content by weight of any other element does not exceed the … is designed to convert the bauxite into pure aluminium oxide (alumina). For this purpose the ground ore is calcined …Legal note
… Metal containing by weight at least 99 % of aluminium, provided that the content by weight of any other element does not exceed the … in a proportion greater than 0.1 % but not more than 0.2 %, provided that neither the chromium nor manganese content …