Document LpX6m49e3BZvQNynea84QXpJw

Barry Castleman's DuPont File CD-ROM Document#DP j[ip DATE orangc/tcxas 77630/es3-830 I December 16, 1970 AIRMAIL Dr. John A. Zapp, Jr. E.Z. DuPont deNemours & Company Haskell Laboratories Wilmington, Delaware 19898 Dear Dr. Zapp: Your name was given to us over the telephone this morning by Dr. Shield with the American Conference of Industrial Hygienists in Cincinnati. Dr. Shield stated that you were a member of a comm* ~~ --* ---;---------- -------=------ I ------------------- ----------------------------------------------------------------------------------- ------------------------------------------------------------" * *. / ROBERT E. BUCKLEY vice prcsiocmt-saics PITTSBURGH CORNING CORPORATION ONE GATEWAY CENTER PITTSBURGH.PA. IS2Z2 January 15, 1968 Mr. Kenneth Keuper -. Room 1240, Engineering Dept. Loviers Building E. I. Dupont Wilmington, Delaware Dear Mr. Keuper: UNIBESTOS, the high temperature insulation manufactured by Pittsburgh Corning Corporation is. composed of fibers of Amosite asbestos. UNIBESTOS contains no Chrysotile or Crocidolite fibers. It is composed exclusively of the ferrous magnesium silicate fiber with suitable fillers and binders. Typical analysis of the main asbestos groups are: Chrysotile Crocidolite Amosite S i02 . FeO Fe23 MgO Na20 h2o - All other (HnO) CdO| K2O1 C^2 1 39.8 1.1 0.8 39.5 0.1 12.0 " 6*7 51.4 20.3 17.5 1.4 6.2 1.9 1.3 49.3 40.9 0.4 5.7 0.2 1.9 1.6 100.0 100.0 . 100.0 ____ 1 _ j _ Ple. a* s. e let me know if there is any additional in