68: Art of stone, plaster, cement, asbestos, mica/sim mat

6801: Setts, curbstones and flagstones, of natural stone (except slate) 6802: Workd monumental/building stone & art; mosaic cube, granules; pdr, na 6803: Worked slate and articles of slate or of agglomerated slate 6804: Mill/grind stones, grinding wheels & pts of nat stone, abrasives/cera 6805: Nat/arti abrasive pdr/grn, on a base of tex mat, paper/paperboard etc 6806: Slag, rock & sim min wool; exfoliatd verm, expandd clay..., art ht/so 6807: Articl of asphalt/of similar mat (eg petroleum bitumen/coal tar pitch 6808: Panel, board etc of veg fibre, straw etc, agglomeratd w cement etc, b 6809: Articles of plaster or of compositions based on plaster 6810: Articles of cement, concrete or arti stone, w/n reinforced 6811: Articles of asbestos-cement, of cellulose fibre-cement or the like 6812: Fab'd asb fib; mx with a basis of ash & articles of such mixtures 6813: Asbestos friction materials and articles nes 6814: Worked mica and articles of mica, nes 6815: Articles of stone or of other mineral substances, nes 68: Art of stone, plaster, cement, asbestos, mica/sim mat