Section 05 Mineral products 25 Salt, sulphur; earths and stone; plastering materials, lirne and cement 25 17 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; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading†2515 or 2516, whether or not heat-treated Commodity Code Description 25 17 10 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 heattreated 25 17 20 Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10 25 17 30 Tarred macadam 25 17 41 Of marble 25 17 49 Other