Section 05 Mineral products 25 Salt, sulphur; earths and stone; plastering materials, lime 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 heat-treated 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