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:

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 subheading 2517.10

Tarred macadam

Salt (including table salt and denatured salt) and pure sodium chloride, whether or not in aqueous solution or containing added anti-caking or free-flowing agents; sea water

Unroasted iron pyrites

Sulfur of all kinds, other than sublimed sulfur, precipitated sulfur and colloidal sulfur

Natural graphite:

Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26:

Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: