Document 3QV7LrxGY2ZNV9yZJ7evJy0MD

Bell Laboratories 600 Mountain Avc'-.s Muirny Hill New J^cy Phono (201) M2 30CG February 20, 1980 Mr. Lucius Williams Staff Supervisor - Safety AT&T, Long Lines - Bedminster Enclosed for your information is literature from Nilfisk regarding their vacuum cleaners for asbestos cleanup. As you are aware, using a regular vacuum to clean asbestos from surfaces is a poor practice. Asbestos fibers easily penetrate the bags of regular vacuum cleaners so the fibers are taken up and then exhausted back into the air. The Nilfisk cleaners contains a high efficiency particulate air filter (HEPA) that removes 99.97% of all particulates as small as .3pm. This filter is located at the exhaust so no fibers escape back into the a.c once they are taken in. 1 strongly urge you to encourage peop1 engaged in asbestos cleanup to have such a vacuum cl< ?r on hand so as to prevent re-entrainment of asbestos f__.ers during this process. MH-8685-DR-sma Copy to G. W. Barnard - AT&T, LL R. Cohen J. Schreibeis M. Wilkening David Rainer Field Industrial Hygienist 001 $$2