… and flint, whether or not heat-treated; macadam of slag, dross or similar industrial waste, whether or not …
Explanatory notes
… and flint, whether or not heat‑treated; macadam of slag, dross or similar industrial waste, whether or not … of broken pieces of stone which are used for the same purposes, either as such or after crushing, also fall in … heading also covers macadam and tarred macadam. Macadam is composed of roughly graded crushed stones, pebbles, slag, …