2518 Dolomite, whether or not calcined or sintered, incl. dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular `incl. square` shape, and dolomite ramming mix (excl. broken or crushed dolomite for concrete aggregates, road metalling or railway or other ballast)

2518 (01/1988-..) Dolomite, whether or not calcined or sintered, incl. dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular `incl. square` shape, and dolomite ramming mix (excl. broken or crushed dolomite for concrete aggregates, road metalling or railway or other ballast) 25181000 (01/1988-..) Crude dolomite, not calcined or not sintered, incl. dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular `incl. square` shape (excl. broken or crushed dolomite for concrete aggregates, road metalling or railway or other ballast) 25182000 (01/1988-..) Calcined or sintered dolomite (excl. broken or crushed dolomite for concrete aggregates, road metalling or railway or other ballast) 25183000 (01/1988-12/2021) Dolomite ramming mix