85 Magnesia was Fibreboard's magnesia insulation, made as pipe covering, block and cement.1,2 In sworn answers in two lawsuits, given in 1969 and 1970, Fibreboard listed "85% Magnesia (Precision Molded) Pipe Covering, Block, Cement" and said these products contained 85% basic magnesium carbonate with 15% asbestos.1,3 Fibreboard's report published by the EPA in 1990 gives about 85% or more basic magnesium carbonate and 15% or less asbestos, and describes the insulation as white.2
The documents give different starting years.1,2,4 The 1969 and 1970 answers say the products were made from 1941 until 1966.1,3 The 1990 report says from about 1928 to 1966.2 In 1968 the plaintiff in another lawsuit, Claude J. Tomplait, wrote in sworn answers to Fibreboard's questions, "I note from your answers to interrogatories that you began manufacturing 85% magnesium in 1925", but the Fibreboard answers he refers to are not in the file.4
The 1970 answers say the products on Fibreboard's list, this one among them, were sold mainly in the West and Midwest for new construction of refineries, petrochemical plants and power plants.3 An insurance company's 1981 list of asbestos products, compiled from other companies' answers in lawsuits, gives 85 Magnesia pipe covering, block and cement under Fibreboard Corporation, with 15 in the column read as percent asbestos, and marks the name as a generic term used by several makers.5
Related: Precision-Molded.
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Pictures
How 85 Magnesia (Fibreboard) looked: labels, photographs and catalog pages from our library. Each picture has its own page and library number, so it can be cited on its own.
Product photograph: PABCO Precision Molded 85% Magnesia Block InsulationProduct photograph · ACL Doc 15171
Catalog page: PRASCO High Temperature Block Insulation (The Paraffine Companies) and 1 other productCatalog page · ACL Doc 15218
Asbestos claims
If you or a family member worked with or around 85 Magnesia (Fibreboard) and later developed mesothelioma or another asbestos disease, a claim may be paid by the Owens Corning/Fibreboard asbestos trust (Fibreboard subfund). Free case review.
What each document says
Every statement about 85 Magnesia (Fibreboard) in the documents, in each document's own words.
The Potter v. Fibreboard Case File (1969-1972), Answers to interrogatories
Asbestos; Publication of Identifying Information (1990)
- Made from: “manufactured from about 1928 to 1966”, said by Fibreboard Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 72
- Made until: “manufactured from about 1928 to 1966”, said by Fibreboard Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 72
- Ingredient: “about 85% or more basic magnesium carbonate”, said by Fibreboard Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 72
- Description: “color: white”, said by Fibreboard Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 72
- Asbestos content: “15% or less asbestos”, said by Fibreboard Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 72
- Form: “block, pipe-covering, and cement thermal insulation”, said by Fibreboard Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 72
The Borel v. Fibreboard Case File (1969-1972), Answers to interrogatories
The Tomplait v. Combustion Engineering Case File (1962-1969), Response to Fibreboard interrogatories
- Made from: “I note from your answers to interrogatories that you began manufacturing 85% magnesium in 1925”, said by Fibreboard Paper Products Corporation, as recorded by Claude J. Tomplait (plaintiff's sworn answers to Fibreboard's interrogatories), p. 64
The Travelers Insurance Company's Product Information Booklet for Its Asbestos Seminar (1980–1981)
Kind of product
We list 85 Magnesia (Fibreboard) with pipe covering and block insulation and insulating cement and coatings, from how the documents describe its form. Those pages explain how such products exposed workers.
Trades that worked with products like it: Insulators and Insulation Workers, Pipefitters and Plumbers, Boilermakers.
Other pipe covering and block insulation by Fibreboard (13)
Pipe covering and block insulation by other makers (263)
Thermobestos · Superex (Johns-Manville) · Careytemp (Philip Carey) · Kaylo (Owens-Corning) · Unibestos (Union Asbestos & Rubber Co.) · Zerogloss (Johns-Manville) · 12 (Combustion Engineering) · 19 (Combustion Engineering) · 19 Hitemp (Philip Carey) · 66 (Eagle-Picher) · 7M (Crown Cork & Seal) · 85 Magnesia (Crown Cork & Seal) · 85 Magnesia (Gaf/Ruberoid) · 85 Magnesia (Johns-Manville) · 85 Magnesia (Keasbey & Mattison) · 85 Magnesia (Philip Carey) · 85% Magnesia (Armstrong Cork) · 85% Magnesia (Eagle-Picher) · 85% Magnesia (Pabco Products) · Acoa (Asbestos Corp. of America) · and 243 more: all pipe covering and block insulation
Other insulating cement and coatings by Fibreboard (8)
Prasco · Caltemp · Super Caltemp · 127 · FI · 85% Magnesia Cement · Fibrous Adhesive (Pabco) · No. 127
Insulating cement and coatings by other makers (316)
Thermobestos · Superex (Johns-Manville) · Asbestile (Johns-Manville) · 85 Magnesia (Johns-Manville) · Calsilite (GAF) · 7M (Philip Carey) · 7M Short (National Gypsum) · 7M Short (Nicolet) · 7M Short Fiber (Mundet Cork) · 7M-90 (Celotex) · 81-27 and 81-93 (Benjamin Foster) · 85 Magnesia (Crown Cork & Seal) · 85 Magnesia (Gaf/Ruberoid) · 85 Magnesia (Keasbey & Mattison) · 85 Magnesia (Philip Carey) · 85% Magnesia Cement (Johns-Manville) · 90-07 H.I. Mastic (Benjamin Foster) · 99 (Eagle-Picher) · 99 Finishing Cement (Eagle-Picher) · A-1 (Philip Carey) · and 296 more: all insulating cement and coatings
See also
- 85% Magnesia in the Lexicon
- Fibreboard: the company's history, documents, people, products and plants
- Fibreboard on our products page: what the documents say about the company's asbestos products, with sources
References
- The Potter v. Fibreboard Case File (1969-1972), Answers to interrogatories (December 22, 1969), p. 2.
- Asbestos; Publication of Identifying Information (February 13, 1990), p. 7.
- The Borel v. Fibreboard Case File (1969-1972), Answers to interrogatories (April 3, 1970), pp. 2, 5.
- The Tomplait v. Combustion Engineering Case File (1962-1969), Response to Fibreboard interrogatories (August 20, 1968), p. 6.
- The Travelers Insurance Company's Product Information Booklet for Its Asbestos Seminar (1980–1981) (April 30, 1981), p. 10.
- Travelers Asbestos Products Printout, July 1981 (July 1, 1981), p. 28.
Mentioned on this site
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“85 Magnesia (Fibreboard).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/fibreboard-85-magnesia.
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