6806: Slag, rock & sim min wool; exfoliatd verm, expandd clay..., art ht/so

680610: Slag wool, rock wool & similar mineral wools in bulk, sheets or rolls 680620: Exfoliatd vermiculite, expandd clays, foamd slag & sim expandd minera 680690: Articles of heat/sound insulatg, etc, nes, mineral mat exc 6811 & 12 6806: Slag, rock & sim min wool; exfoliatd verm, expandd clay..., art ht/so