Today, Port Allegany is best known for its glass manufacturing.
In the late nineteenth century, it started glass manufacturing.
After 1870, the town also became known for glass manufacturing.
The waste heat from glass manufacturing can be used in industrial-sized greenhouses for food production.
The liberty took its name from a glass manufacturing works established there.
Another defect common in glass manufacturing is referred to as a tear.
It made the city the center of excellence for decorative glass manufacturing.
Much of the 19th century industry was based on glass manufacturing.
One of the leading companies in aluminosilicate glass manufacturing is Corning.
Among the city's industries are printing, glass manufacturing, food processing, and textiles.