25174100

 Granules, chippings and powder, of stones of heading 25.15 or 25.16, whether or not heat-treated: Of marble

25174900

 Other

2518

Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; dolomite ramming mix.

25181000

 Dolomite, not calcined or sintered

25182000

 Calcined or sintered dolomite

25183000

 Dolomite ramming mix

2519

Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure.

25191000

 Natural magnesium carbonate (magnesite)

251990

 Other:

25199010

Fused magnesia; dead-burned (sintered) magnesia

25199020

Other

2520

Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulphate) whether or not coloured, with or without small quantities of accelerators or retarders.