Documents in our library describe Thermalite 85% Magnesia (Ehret Magnesia Manufacturing Co.) as “85% magnesia”.1 They give it as made 1904–1964.2 They put its asbestos content at 10% to 15%.2 The asbestos named is amosite. It was rated for temperatures up to 600 °F.3 Where the documents differ, each is listed below with its source.
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What each document says
Every statement about Thermalite 85% Magnesia (Ehret Magnesia Manufacturing Co.) in the documents, in each document's own words.
Sourcebook on Asbestos Diseases: Medical, Legal, and Engineering Aspects, Volume Two
- Description: “85% magnesia” (as of 1951), p. 1161
Asbestos; Publication of Identifying Information (1990)
- Made from: “produced 1904 to 1964 by Ehret and BEH”, said by Keene Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 112
- Asbestos content: “up until World War II it contained 10 to 15% asbestos fiber”, said by Keene Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 112
- Asbestos fiber: “Thereafter, it contained 10 to 15% amosite.”, said by Keene Corporation, as recorded by U.S. EPA, Federal Register 55 FR (Feb. 13, 1990), p. 112
Asbestos Magazine, 1951, August 1951
- Temperature limit: “Designed for temperatures up to 600°F.”, p. 23
Asbestos Magazine, 1956, January 1956
- Use: “used throughout this Texas refinery” (sales to Southern Production Co. Gasoline Plant, Pledger, Texas), p. 634
Military Qualified Products List (1951–1995)
- Made at: “Ehret Magnesia Mfg. Co. Valley Forge, Pa. Plant: Same address” (as of 1959-02-25), p. 545
Kind of product
We list Thermalite 85% Magnesia (Ehret Magnesia Manufacturing Co.) with pipe covering and block insulation, from how the documents describe it. That page explains how such products exposed workers.
Trades that worked with products like it: Insulators and Insulation Workers, Pipefitters and Plumbers.
Other pipe covering and block insulation by Ehret Magnesia Manufacturing Co. (3)
Pipe covering and block insulation by other makers (273)
Thermobestos · Superex (Johns-Manville) · Careytemp (Philip Carey) · Kaylo (Owens-Corning) · Unibestos (Union Asbestos & Rubber Co.) · Superex-sg (Johns-Manville) · Temp-check (Philip Carey) · Tempcheck (Philip Carey) · Therm-o-bestos (Johns-Manville) · Therm-O-Flake (Illinois Clay Products) · Thermalite (Keene) · Thermalite 85% Magnesia (Baldwin-Ehret-Hill) · Thermasil (Baldwin-Ehret-Hill) · Thermasil (Keene) · Thermo Fire Felt (Johns-Manville) · Thermobestos pipe covering · Thermowrap (Johns-Manville) · Train Pipe Covering (Johns-Manville) · Tri-calite (Crown Cork & Seal) · Trica-mag (Crown Cork & Seal) · and 253 more: all pipe covering and block insulation
See also
- Ehret Magnesia Manufacturing Co.: the company's history, documents, people, products and plants
References
- Sourcebook on Asbestos Diseases: Medical, Legal, and Engineering Aspects, Volume Two (1986), p. 116. Not yet published in our library.
- Asbestos; Publication of Identifying Information (February 13, 1990), p. 11.
- Asbestos Magazine, 1951, August 1951 (August 1, 1951), p. 2.
- Asbestos Magazine, 1956, January 1956 (January 1, 1956), p. 63.
- Military Qualified Products List (1951–1995) (February 25, 1959), p. 54.
Cite this page
“Thermalite 85% Magnesia (Ehret Magnesia Manufacturing Co.).” AsbestosClaims.Law Library. https://asbestosclaims.law/library/products/ehret-magnesia-manufacturing-co-thermalite-85-magnesia.
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