… 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; …
Explanatory notes
… 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; … the same purposes, either as such or after crushing, also fall in this heading. The heading also includes shingle and …