289212 Coal or rock cutters and tunnelling machinery/ other boring and sinking machinery

28921233 Self-propelled coal or rock cutters and tunnelling machinery 28921235 Coal or rock cutters and tunnelling machinery (excluding self-propelled) 28921253 Self-propelled boring or sinking machinery 28921255 Boring or sinking machinery (including fixed platforms used for oil or natural gas exploration) (excluding self-propelled)