HTS Number	Description	Unit of Quantity	General Rate of Duty	Details
2517	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:
2517 1000	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		Free
2517 1000.15	Pebbles and gravel	t	Free	More
2517 1000.20	Limestone, except pebbles and gravel	t	Free	More
2517 1000.55	Other	t	Free	More
2517 2000.00	Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10	t	Free	More
2517 3000.00	Tarred macadam	t	Free	More
2517 4100.00	Of marble	t	Free	More
2517 4900.00	Other	t	Free	More