Document jmXyov8aX5y2r2LJJkyVqRzxO

Case 48106-3 Bell Laboratories 600 Mountain Avenue Murray Hiif, New Jersey 07974 Phone (201) 532 -3000 April 1, 1980 Mr. John D. Ludwig District Staff Manager - Safety 185 Franklin Street Room 1501 Boston, Massachusetts 02107 PLAINTIFF'S EXHIBIT Dear John: The three bulk samples and 17 air filter cassettes you mailed to me from Framingham, Massachusetts following a boiler explosion have been analyzed for asbestos. Bulk Sample Analysis All bulk samples were analyzed by using x-ray diffraction analytical techniques. Sample number 1, labeled "Refractory from Boiler", contained no asbestos. This sample appeared to be cement and consisted primarily of small stones. The principal chrystalline component is aluminum silicate. The principal chrystalline components of sample number 2, labeled "Breech Covering", were fiberglass and chrysotile asbestos. The principal chrystalline component of sample number 3, labeled "Breech Covering", is chrysotile asbestos. Air filter Cassette Analysis Sample * I.D. Location Number fibers Counted Volume Air (liters) Blank Corrected fibers/cc A-80-3 21-1 21-2 21-3 21-4 21-5 Credit Union Boiler Room Fan Room Room 1593 Blank 9 no filter 19 filter in back- wards no filter 246 - 242 - , .02 - .05 - CONFIDENTIAL 003738 J. D. Ludwig - 2 Sample * I .D. Location Number fibers Counted Volume Air (liters) Blank Correcte< fibers/cc A-80-2 22-1 22-2 22-3 22-4 22-5 22-6 22-7 22-8 22-9 R. J. Mansini Ladies Room Boiler Room Credit Union Larry Foster Boiler Room Credit Union Ladies Room Blank no filter 19 no filter no filter 20 no filter 13 7 4 414 - 300 - 314 324 -- .03 - - .04 - .02 .01 - A-80-3 24-1 24-2 24-3 24-4 Ladies Room Boiler Room Fan Room No Data Sheet 7 4 5 9 518 312 292 -- .01 none detected .01 - All samples taken at 350 Cochituate Road, Framingham, Mass. Per our telephone discussion regarding the air filter cassette analysis, I suggest you talk to Millipore because something must be wrong with this batch of filters. To familiarize yourself with the difference between the filter and filter pad, you should take apart some cassettes. Before sampling, you could then make a determination as to whether or not that cassette contains a filter. If you have any further questions about this analysis, please give me a call at (201) 582-7512. MH-8685-DR-dw Ref: 1153 Copy to R. E. Finn,M.D. - NET R. L. Beach - AT&T J. J. DeCapua J. M. Degen' R. 7*. Stone/ M.D. W. J. Schreibeis G. >!. Wilkening David Rainer Field Industrial Hygienist CONFIDENTIAL 003739