Explanatory notes
… inter alia , to : vermiculite, perlite and chlorites, unexpanded; earth colours, whether or not calcined or mixed … (e.g., roasting, fusion or calcination) are not allowed, unless specifically permitted by the heading text. Thus, for … in those cases in addition to those allowed generally under Note 1 to this Chapter. For example, witherite …Legal note
… without changing the structure of the product), crushed, ground, powdered, levigated, sifted, screened, concentrated … inter alia , to : vermiculite, perlite and chlorites, unexpanded; earth colours, whether or not calcined or mixed …