Document peqr34pdGN8QXL3vE2Vr2kNrD

FILE NAME Corning OC DATE 1941 June 21 DOC OC292 DOCUMENT DESCRIPTION Letter from Aetna Life Insurance Co. RE Owens- Corning THE ^ ETNACASUALTY AND SURETY COMPANY HARTFORD CONNECTICUT AFFILIATE OF ^ TNA LIFE INSURANCE COMPANY THE AUTOMOBILE INSURANCE COMPANY THE STANDARD FIRE INSURANCE COMPANY ENGINEERING AND INSPECTION DEPARTMENT June 21 1941 Mr. John A. Hill Elosser % Hill A 5th Flr Home Bank Eldg Toledo Ohio Dear Mr. Hill Re Corning Fiberglas Corporation I have learned from the field that there has been considerable discussion relative to the occupational disease hazard in the use of fiberglas As you know I have been very much interested in the study of silicosis over a period of years especially from the research angle and I can very frankly say that in all my experience I can not see any reason for stating that fibergles is more hazardous than rock wool slag wool or asbestos I believe that most articles covering occupational disease exposure definitely warn of the hazards of asbestosis growing out of the use of asbestos Relative to the use of fiberglas very thoroughly with our stallation of class wool rock wool or sleg wool I have discussed this matter Medical Department insofar as it applies to the inand its relation to silicosis and I know of no better- answer to give you than their direct statement We may definitely state that this is not possible established fact that silicates of which class wool will not produce silicosis or a similar condition based upon the is composed Free silice which when inhaled in sufficient quantity will produce siliensis is one of the ingredients of many varieties of glass However in the manufacturing process the free silice cherically unites with other substances leading to the production of silicates and glass is a solid solid solution of these various silicates produced by the fusion of free silice with metallic czides Gless wool consists of cless in the form of very fine strands in his publication Attorneys Textbook of Ledicine states is It is is admitted that silicon dioxide is the only substance capable producing silicosis I believe from the statements riven shove and other finding place before you it will be greed that flicosis can not und I therefore see no reason for the statements statements have namely that fiberglas producen silicosis because insofar strtement is contrary to fect which we our readily produced by silicates silicates silicates by been made find this te we ow ar 01 501 0136 Catter