Since the beginning of the 20th century, Porz has also been known for its glass manufacture.

In the 16th century it was a major centre for glass manufacture.

Other industries included brewing, glass manufacture, mining and ship building.

He began working in glass manufacture at the age of 14.

Industry in the town covers textile-making, metallurgy, and glass manufacture.

Aggregate may also be used as a flux in glass manufacture.

Today most glass manufacture has a "hot end" where the products are made.

The town was an industrial centre based on coal mining and glass manufacture, which have now been replaced by service industries.

This window, which predated commercial stained glass manufacture in Australia, has unfortunately been lost.

Silver chloride is used to create yellow, amber, and brown shades in stained glass manufacture.