Sand & Flame

The making of glass from sand and flame: 1. automatic bottle making; 2. manufacture of fine glass tubing; 3. transformation of glass marbles into fibres; how these fibres are spun into glass threads for the weaving of cloth and tape for electrical insulation; 4. the manufacture of glass brick; 5. plate glass manufacture including the furnacing, rolling, cutting, grinding, and polishing; 6. how plate glass panes are made into shatter-proof glass.