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
Calcined or sintered dolomite (excl. broken or crushed dolomite for concrete aggregates, road metalling or railway or other ballast)
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)