Heading 2517

Pebbles, gravel, crushed stone for concrete aggregates for road or railway ballast, shingle or flint; macadam of slag, dross etc tarred granules, chippings, powder of stones of heading no. 2515 and 2516

251710 Pebbles, gravel, broken or crushed stone; of a kind commonly used for concrete aggregates, for road metalling or for railway or other ballast, shingle and flint, whether or not heat-treated 251720 Macadam of slag, dross or similar industrial waste; whether or not incorporating the materials in Tariff item 2517.10.00 251730 Tarred macadam 251741 Stones; of marble, in granules, chippings and powder, whether or not heat-treated 251749 Stones; of heading no. 2515 or 2516 (excluding marble), in granules, chippings and powder, whether or not heat-treated