In 1786, in France, the royal family decided to build in Creusot the manufacture of crystals of the Queen. The old crystal factory is now called the castle of the glass factory; there is a museum on glassware and industry Le Creusot.
The number of crystal furnaces tends to decrease because of the dangerousness of this activity for the workers, but especially also the economic cost, being a labor-intensive activity.
Workers were exposed to lead, via air containing steam or dust in particular, and other glass additives (arsenic trioxide for example) or hydrofluoric acid used to engrave the glass. They risked various diseases including saturism, anemia, certain cancers.
The cold work of the crystal (grinding or acidic) also exposed the workers or craftsmen to lead poisoning and other pathologies.