Code 4111 applies to employers engaged in manufacturing glassware by either a mouth-blowing process or by a semiautomatic blowing process.  In some plants both processes are conducted side-by-side.  Crushed glass, lime, silica sand, phosphate, antimony oxide, arsenic trioxide, silica, silica fluorides, borax and soda ash are received from others.  The raw materials of predetermined mixture are dumped into mixing tumblers and poured into hopper cars.  The batch is fed into a furnace and the molten glass is either formed by the mouth blowing process or hand filled into molds in the shape of the product and then transferred to semi-automatic blowing machines.  The products are slow cooled to harden.  The application of coloring agents and further tempering are additional operations which may be performed.  The products, following inspection, are packaged for shipment.  Some of the products inclusive under this classification are glass tableware such as cups, saucers, plates, glasses, pyro glass bake ware, perfume bottles, candlestick holders, kerosene lamp, chimneys, auto headlight lenses, glass radio insulators, and molded glass doorknobs, paperweights and ashtrays.

This classification also includes engraving and etching glass.