General Glass Industries

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General Glass Industries was a United States–based wholly owned subsidiary of General Glass International. Also known as "GGI", this company manufactured sheet glass from 1988 until 1993 using the Fourcault process. GGI also produced cut sheet and window glass from flat glass produced by other manufacturers. The site of GGI was located in Jeannette, Pennsylvania, which is located east of Pittsburgh, PA. GGI was one of the largest single employers in Jeannette and was one of the last of the "major" glass plants to operate in the "Glass City". According to local rumors the "Window House" as it was known, was once the largest producer of window glass in the world.

Production ceased in July 1993 at the end of the campaign, or expected life of a glass furnace before it requires a rebuild or overhaul. After that time the parent company, General Glass International, weighed its options before electing to liquidate operations to pursue initiatives in other locations.

The site was purchased by the Westmoreland Industrial Development Corporation. It is now called Jeannette Industrial Park, and is part of the Westmoreland County Industrial Parks. After some demolition and remediation operations, it now hosts a variety of businesses.

The parent company of GGI, General Glass International, continues to market flat glass products to this day.

• Parent company
• Manufacturer

• General Glass International
• Jeannette Industrial Park