Explanatory notes
… covers identifiable roofing, facing and damp course slates, not only of special shapes (polygonal, rounded, etc.), but … excludes : (a) Granules, chippings and powder of slate, not artificially coloured ( heading 25.14 ). (b) Mosaic … or drawing slates, ready for use, and boards, framed or not ( heading 96.10 ). …