Heading 2517 · Section V
Pebbles, gravel, crushed stone for concrete aggregates for road or railway ballast, shingle or flint; macadam of slag, dross etc tarred granules, chippings, powder of stones of heading no. 2515 and 2516
Source: Harmonized System 2022 edition (World Customs Organization), from the UN Comtrade classification list.