6815

Articles of stone or of other mineral substances (including carbon fibres, articles of carbon fibres and articles of peat), not elsewhere specified or included.

681510

Non-electrical articles of graphite or other carbon:

68151010

Yarn or thread

68151020

Bricks, paving slabs, floor tiles and similar articles

68151091

Other:'Carbon fibres

68151099

Other

68152000

Articles of peat

68159100

Other articles:'Containing magnesite, dolomite or chromite

68159900

Other

69010000

Bricks, blocks, tiles and other ceramic goods of siliceous fossil meals (for example, kieselguhr, tripolite or diatomite) or of similar siliceous earths.

6902

Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths.

69021000

Containing by weight, singly or together, more than 50% of the elements Mg, Ca or Cr, expressed as MgO, CaO or Cr2O3