Document 9J2wdZY0YE1VqeyaMEawyyzY6

2 Inorganic Ingredients The only noticable difference of the inorganic ingredients is the wet volume of the asbestos fiber. While all data is well within the specified limits, 1978/1979 fiber displays a wet volume 10 to ,, 20 cc lower than the 1976 fiber. 2. Physical Properties Gogan Hardiness & Specific Gravity Data for the 1976 thru 1979 period does not indicate any sig nificant trend. The only detectable trend is an approximate 3 gogan point increase over the three year period. Acetone Extract The average 1978 extract is .76 percentage points higher than the 1976 material. The average 1979 extract is .06 percentage points higher than 1976. i 3. Processing A review of our Procedure Change System (PCN) reveals that no changes have been made nor requested throughout the period in question. Summary In conclusion, it is highly improbable that any of the slight raw material trends detected could cause a significant change in the frictional properties of the lining. SCI 02769