Document QMXGZp9jY12kK78rGyZ0EJOvo

Page 1038 1 It was not until that silk was replaced with 2 asbestos that 85 percent magnesia was a commercially 3 acceptable product for use at temperatures above 200 4 degrees Fahrenheit. 5 Q In the period roughly 1947 to 1948 you were 6 in quality control, involved in product development of 7 hydrous calcium silicate for Owens-Illinois? 8 A That is correct. 9 Q At the Sayreville plant, the pipe insulation 10 manufacturing which you described was just prior to 11 the plant shutdown in 1952 and was rather limited in 12 time and amount? 13 A Correct. 14 Q In addition to its having certain high 15 temperature properties hydrous calcium silicate, which 16 you indeed, helped to develop, at least at AEM was 17 relatively less friable than some of the other 18 asbestos insulation materials which had been earlier 19 in use, such as 85 percent mag. 20 A Yes. 21 Q Sometime around 1958 you became familiar