Workers in this until group knead and blend raw rubber and rubber compounds and work natural and synthetic rubber and plastics in the manufacture of such products as moulded footwear, domestic articles, toys, sporting equipment, insulating materials, industrial accessories and life-saving equipment. Their functions include: kneading, mixing and blending raw rubber and rubber compounds for further processing; producing sheets of rubber or rubberised fabric by a rolling process; operating machines extruding compounded rubber; shaping uncured rubber by moulding; assembling domestic and other rubber goods; shaping plastic materials by injection-moulding, compression-moulding and extrusion; laminating plastics or plastic-impregnated materials; assembling or fabricating plastic products; and performing related tasks.