Document DM5YQYq2dLBJnngrqe5BqKQaM

ANO INOUSTRUL MlOIONC P.0. Box 80. fCKTON ftOAO NEWARK. OCLAWARC 18711 CENTRAL NS1CAKCH ANO OCVStQPMtNT OCRARTMCNT December 2, 1983 ' Dr. David W. Pika Chemical Defense Establishment Physical Protaetion Division Porton Down Salisbury, Wiltshire, England Dear Dr. Pika: Recently, I was discussing tbs affactivanass of respirator filtar madia against asbestos containing dust with Edwin C. Hyatt and Alan L. Hack of Los Alamos National Laboratory. They indicated that you may have done soma tasting of thesa filtar media against asbestos and recommended that I contact you. I am particularly interested in the effectiveness of disposable respirator filtar media against asbestos. I would be very appreciative of any information or leads that you can provide me on thir subject. We at Du Pont, have dona a considerable amount of research on raspirator performance during workplace use, raspirator fit tasting and the effects of facial hair on respirator fit and would be glad to share this information with you on request. Thank you in advance for any information that you may be able to provide. Sincerely yours, SWDAmj Stephen W. Dixon Section Supervisor Industrial Hygiene S82 DUP 0907293 DU 028394