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Case ^8106-3 7* Bel! Laboratories 600 Mountain Avenue M j'rav Hill. N':w jerse/ 07974 Phone(201}582-3000 January 15, 1981 Mr. Lucius Williams Staff Supervisor - Safety AT&T Long Lines Bedminster, New Jersey 07921 Dear Lucius: The two bulk insulation samples that you mailed to me from 811 Tenth Avenue, New York City, New York have been analyzed per your request. Results are as follows: Sample 1: "From refrigeration piping in air conditioning room." This material was analyzed by dispersion staining optical light microscopy. There was not enough material for an X-ray scan. No birefringent asbestiform material was seen. The bulk of the sample contained a muslin material. This sample does not con tain asbestos. Sample 2: "From refrigeration piping in drinking water room." This material was analyzed by X-ray diffrac tion and dispersion staining optical light microscopy. An X-ray diffraction scan of the sample revealed that the major crystalline component is chrysotile asbestos. Birefringent fibers with the optical and morphological characteristics of chrysotile asbestos were seen. CONFIDENTIAL 003627 Mr. Lucius Williams - 2 If you have any questions regarding this analysis, please give me a call at 582-7512, Ref: 1269- MK-78691-DR-nd David Rainer Industrial Hygienist opy to . W. Barnard - AT&T - Long Lines . Johnson, M.D. - AT&T - Long Lines N. J. DeCapua - AT&T J. M. Degen - AT&T J. E. Reese - AT&T R. W. Stone, M.D. - AT&T W. J. Schreibeis G. M. Wilkening aoo CONFIDENTIAL 003628