Lori L. Guzzo to Helen Marsh Enclosing Owens-Corning Fiberglas's Asbestos Product Chart (1990)

A letter of March 15, 1990, from Lori L. Guzzo of the Seattle law firm Betts, Patterson & Mines to Helen Marsh of Freeborn & Peters in Denver, enclosing "the most recent product list we have received from OCF" from Owens-Corning Fiberglas's discovery responses. The enclosed chart, dated December 21, 1989, lists OCF's asbestos-containing products with the years made or sold, purpose, asbestos content, when warning labels were added and the type of asbestos. It begins with Kaylo calcium silicate pipe and block insulation, sold by OCF from 1953 and made by it from 1958 to November 1972, "Approx. 15% by weight" amosite and/or chrysotile, with a warning label from December 1966, and Kaylo rebranded for Eagle-Picher (Hy-Lo) and Armstrong Cork (Armstrong LK).

What it shows

The chart also lists Unarcoboard (renamed Fyrcor in 1971), about 15% amosite; Fiberglas insulating and finishing cements, sold from 1940 to 1951 with no warning label; SC-30 and SC-40 cements made for OCF by Eagle-Picher from 1958 to 1968, 3% to 9% chrysotile; and OC Mastic, an asphalt emulsion "to which long asbestos fibers have been added." It records Kaylo sold to OCF by Fibreboard's Pabco division from 1960 and, it believes, by Johns-Manville from 1958 to 1960. A later version of the same chart is in Owens-Corning's 1991 discovery papers.