Document d4wzyNbNJ5pm2DLyqDe12RJ6

PLAINTIFF'S EXHIBIT ATT-399 Bell Laboratories 600 Mountain Avenue Murrey Hill, New Jersey 07974 Phone (201) 562-0000 March 27, 1980 Mr. Ray Sinclair NIOSH 4676 Columbia Parkway Cincinnati, Ohio 45226 Dear Mr. Sinclair: Per our telephone discussion, I am forwarding you, under separate cover, 14 blank videotapes of various lengths in exchange for 7 NIOSH training tapes. The tapes I wish to order are: NAME MINUTES NUMBER Asbestos Screening Process Personal Sampler Calibration Personal Sampler Pumps Rotameter Calibration Sound Level Meter Calibration Evaluation of Industrial Hoods Combustible Gas Detectors 17:00 11:45 16:30 10:10 7:36 24:00 24:00 154A 002 003 004 005 007 008 Thank you very much for yo MH-868 5-DR-sma Copy to W. J. Schreibeis G. M. Wilkening VAA David Rainer Field Industrial Hygienist 001890