This sub-class includes the manufacture of glass in all forms, made by any process and/or the manufacture of articles of glass. Units in this sub-class are primarily engaged in the manufacture, shaping and processing of: •flat glass, including wired, coloured or tinted flat glass •toughened or laminated flat glass •glass in rods or tubes •glass paving blocks •glass mirrors •hollow glass •multiple-walled insulating units of glass •bottles and/or other containers of glass or crystal •drinking glasses and/or other domestic glass or crystal articles •glass fibres, including glass wool and/or non-woven products thereof •laboratory, hygienic or pharmaceutical glassware •clock or watch glasses, optical glass and/or optical elements not optically worked •glassware used in imitation jewellery •glass insulators and/or glass insulating fittings •glass envelopes for lamps •glass figurines