2517: Pebble etc for aggreg etc; macadam of slag etc; granule etc of 25.15,

251710: Pebbles, gravel, broken or crushed stone used for aggregates etc 251720: Macadam of slag, dross or similar industrial waste etc 251730: Tarred macadam 251741: Marble granules, chippg & powder of 25.15 or 25.16 heat-treated or no 251749: Granules, chippings & powder nes, of 25.15 or 25.16 heat-treated or n 2517: Pebble etc for aggreg etc; macadam of slag etc; granule etc of 25.15,