Document MoaLZDQgDoKxwYd7MMGLNa6g7

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