Historical insulation research
Unibestos Historical Records and Primary Sources
Court decisions, manufacturer interrogatories and trust records for the Unibestos chronology.
Manufacturer interrogatory record
The Butler County, Ohio litigation response is unusually detailed: dates, composition, carton dimensions, plant locations, the 1968 label, and the method of fastening pipe covering. It is the primary reference for the physical product descriptions in this library.
1983 federal decision
In re Related Asbestos Cases discusses the UNARCO-to-Pittsburgh Corning product-line transfer and manufacturing chronology. It is particularly useful when matching company names to decades.
Federal appeals and bankruptcy history
Reported federal opinions document the Pittsburgh Corning 1962–1972 manufacturing period and later corporate reorganization. The official asbestos personal injury trust provides its own governing claim materials.
Read the record in context
The archive links to complete records so readers can examine the historical documents, their dates and the statements made in them.
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
Additional documentary pathways
These records expand the archive beyond the initial source selection. Court opinions summarize evidence and testimony; the ToxicDocs link opens a historical interrogatory record. Each source is labeled by type to help readers follow the underlying record.
Washington Supreme Court: UNARCO sale, Tyler and Bloomington plants
Hall v. Armstrong Cork (1984). Product-line transfer; manufacturing facilities and assets.
California Court of Appeal: Navy specifications and Unibestos marketing
Kase v. Metalclad (2016). Navy procurement, historical advertisements and product specifications.
Federal district court: 1962 asset acquisition
Amader v. Pittsburgh Corning (1982). Manufacturing plants, customer lists and distribution assets.
Federal appeals court: Unibestos pipe covering at shipyard
Lohrmann v. Pittsburgh Corning (1986). Trade and workplace testimony; 1962–1972 manufacturing chronology.
ToxicDocs: additional Pittsburgh Corning interrogatory response
Pittsburgh Corning interrogatory. UNARCO transfer, trademark and manufacture dates.
Federal trial court: insurance and Unibestos manufacturing history
Twin City Fire Insurance v. Pittsburgh Corning (1992). Corporate manufacturing period and historical litigation.
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.