2516Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a square or rectangular shape (excl. in the form of granules, chippings or powder, or already with the characteristics of setts, curbstones and flagstones, and monumental or building stone of an apparent specific gravity of >= 2,5)
2516 90Porphyry, basalt and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a square or rectangular shape (excl. in the form of granules, chippings or powder, or already with the characteristics of setts, curbstones and flagstones, monumental or building stone of an apparent specific gravity of >= 2,5, granite and sandstone)
2517Pebbles, gravel, broken or crushed stone, for concrete aggregates, for road metalling or for railway 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 and 2516, whether or not heat-treated
2517 49Granules, chippings and powder, whether or not heat-treated, of travertine, ecaussine, alabaster, basalt, granite, sandstone, porphyry, syenite, lava, gneiss, trachyte and other rocks of heading 2515 and 2516 (excl. marble)
