… 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 … of stones of heading 25.15 or 25.16, whether or not heat-treated. …
Explanatory notes
… 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 … for concrete aggregates, for road metalling or for railway track or other ballast. Segregated materials of construction …