Section 13 ARTICLES OF STONE, PLASTER,CEMENT,ASBESTOS, MICA OR SIMILAR MATERIALS; CERAMIC PRODUCTS; GLASS AND GLASSWARE 68 Articles of Stone, Plaster, Cement, Asbestos, Mica Or Similar Materials 68 06 SLAG WOOL, ROCK WOOL...; EXFOLLATED VERMICULITE, EXPANDED CLAYS... Commodity Code Description 68 06 10 Slag wool, rock wool and similar mineral wools (including intermixtures thereof) 68 06 20 Exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral 68 06 90 Other