CHEMICAL ADDITIVES FOR USE IN PORTLAND CEMENT COMPOSITIONS-NAMELY, ADMIXTURES FOR CONCRETE AND MOTAR

IRREGULARLY CUT OR COMMINUTED TEXTILE FIBRES-NAMELY, COTTON, RAYON OR WOOL, USED AS A SURFACE COATING FLOCK FOR SURFACE

MEMBERS SUBJECT TO ABRASION IN GRINDING APPARATUS, COMPRISING ROLLERS FOR ROLLER-MILLS, LINER PLATES, AND BULLRINGS OR GRINDING RINGS FOR MILLS.