Section 05 Mineral products 25 Salt; sulphur; earths and stone; plastering materials, lime and cement 25 17 Pebbles, gravel, etc; macadam of slag; tarred macadam, etc 25 17 20 Macadam of slag, dross or similar industrial waste, whether or not incorporating the ... Commodity Code Description 25 17 20 00 Macadam of slag, dross or similar industrial waste, whether or not incorporating the ...