Document 50kpX0vb41dVa07EBkmp1z1r0

FILE NAME Corning OC DATE 1966 Aug 8 DOC OC113 DOCUMENT DESCRIPTION Memo RE Kaylo Dust - Bath Iron Works with Handwritten Notes WARE Wi Nbr) te Dote August 8 1966 / 1 A Kevin Kaylo is principally a calcium silicate matrix with a range of 12 to 18 asbestos intermix Calcium silicate is not considered a health hazard but does create dust when cut or sawed Asbestos is recognized as a health hazard causing asbestosis Asbestosis requires 12 years or more of exposure to cause objective The threshold limit value set by the A.C.G.I.H. is 5 million symptoms _ cubic foot However Dr. Selikoff has stated that only particles one fiber per in the body can cause cancer In the past few years medical teams have examined the lung tissue of citizens of Johannesburg S.A Miami Florida and Pittsburgh Pennsylvania at autopsy and found that 30 to 47 had asbestos bodies in the lungs None of these people were known to have Worked in the asbestos industry or mines Dr. Selikoff a claims that the urban atmosphere is full of asbestos fibers emanating from asbestos floor tiles and shingles auto brake drums etc. The asbestos industry cannot believe that such wide asbestos fiber dis- tribution is possible and they are pointing the finger at other fibers as the more probable cause of asbestos bodies Asbestos bodies sometimes develop into mesotheliomas a tumor with considerable carcinogenic potential Because of asbestosis if for no other reason asbestos fibers impossible should be removed from the atmosphere by adequate ventilation If ven- tilation is suitable respirators should be worn by workmen At this point I believe there is reason to question the A.C.G.I.H. threshold limit School T.L.V. Herard The correspondence does not indicate what readings the of Public Health has obtained from their air samplings or what they approved We should recommend good ventilation and respirators cutting It is impossible to guess the amount sawing etc. of Kaylo There are too of dust created by many local factors the in-  Mr. J. M, Briley 1966 1966 1966 Bath Works attacking problem correctly consult- consult- be accepted accepted yae dn. FHE - F. H. Edwards awe