Historical insulation research
Unibestos Manufacturing: Tyler and Port Allegany
Two documented manufacturing plants and the dates Pittsburgh Corning reported for each.
Tyler, Texas: July 1962–February 1972
Pittsburgh Corning identified Tyler as a Unibestos manufacturing site throughout its production period. The earlier UNARCO product-line assets were acquired in 1962.
Port Allegany, Pennsylvania: April 1964–February 1972
The company identified Port Allegany as an additional Unibestos manufacturing location beginning April 1, 1964.
What manufacturing dates can unlock
A carton, shipment document or coworker may identify a plant, distributor, year or production batch. Tyler and Port Allegany are separate historical production locations and should not be confused with every Pittsburgh Corning glass-products facility.
Beyond the factory
The manufacturing record connects to delivery, warehouse, contractor and jobsite records. A recalled company name or product can lead to a search for the original purchasing or installation records.
Explore related Unibestos history
Return to the Unibestos historical library →
Unibestos Historical Insulation Library
Follow the Unibestos name across the UNARCO and Pittsburgh Corning years, with products, plants, packaging and workplaces.
Explore history →Unibestos: UNARCO to Pittsburgh Corning Timeline
A dated history of the Unibestos trade name, manufacturer transition and production years.
Explore history →Unibestos Pipe Covering: Shape, Materials and Installation
Recognize rigid half-cylinder pipe insulation, its dimensions, materials and fitting work.
Explore history →Unibestos Block and Custom-Cut Insulation History
Understand the documented block form and how it differed from standard pipe covering.
Explore history →Unibestos Cartons, Labels and Product Identification
Three-foot paperboard cartons, brand marks and the documented 1968 warning-label change.
Explore history →Unibestos Manufacturing: Tyler and Port Allegany
Two documented manufacturing plants and the dates Pittsburgh Corning reported for each.
Explore history →Unibestos: Navy and Shipyard History
Trace the early Navy testing history and later marine pipe-insulation uses.
Explore history →Unibestos in Power, Chemical and Industrial Workplaces
Industrial equipment and trade details that can help reconstruct insulation work.
Explore history →Pittcote, Pittseal and CS White Paint: Product History
Separate Pittsburgh Corning accessory coatings and mastics from Unibestos thermal pipe covering.
Explore history →Unibestos Historical Records and Primary Sources
Court decisions, manufacturer interrogatories and trust records for the Unibestos chronology.
Explore history →Historical source records
Federal court: Unarco to Pittsburgh Corning product-line history
Federal court: Pittsburgh Corning Unibestos manufacturing and insurance chronology
Federal bankruptcy appeal: Pittsburgh Corning corporate and asbestos history
Pittsburgh Corning Asbestos PI Trust
Start with what you remember
A product name, plant, pipe location, coworker or decade can be a starting point for investigating an asbestos exposure history.