Document jELqdeyEaBr0MzDk1pMaz7rR

The /Etna Casualty and Surety Company HARTFORD, COHHKCmCMT *,**&.<** o* A[TN tl'C INIUKAM6I TH( AUtOMOBiU mlUBANCC CO*A"V Ml lUNOAAO *l* MlWRBNCK eO**MMV CNamtlNlNO MB IMlMCTfON OCMRM CMT June 21, 1941 i*r. John A. ttili Bidaser V Hill, 0/A., 5th ?1p., Homs Sank 51dg. Toledo, Ohio PLAINTIFFS EXHIBIT ^L\yiil65. Desr Up. Hills 3ei Oweas^Coraicg ?lberglaa Corporation PLAINTIFF'S EXHIBIT^ I MM86.0 have learned from the field that there has been considerable discussion relative to the occupational disease hazard la the use of fiberglas. As you know, I have been vary much interested la the study of silicosis over a period of years, especially from the research angle, and I con very frankly say that in all my experience I can not see any reason for statins that flbergl&s is more hazardous than root wool, slag wool or asbestos, I believe that most articles coverIns occupational disease exposure definitely warn of the hazards of eabeatosis growing out of the use of asbestos, Relative to the use of fiberglas, rock wool or alas wool, I have discussed this matter very thoroughly with our ilodical Department Insofar as it applies to the in stallation of glass wool and its relation to silicosis, and I know of no better answer to ;ive you than thalr direct statement* "Je may definitely state that this is not possible, based upon the established fact that silicates of which ?leea wool is composed will act produce silicosis or a similar condition. Free silica, .hich when inhaled la sufficient quantity will produce silicosis, is one of the .Ingredients of many varieties of glass. Hoover, la the manufacturing process, the free silica chemically unites with other substances, leading to the production of silicates, and glass la a solid solution of these various silicates produced by the fusion of free silica with metallic oxides, -lass wcoi con sists of rlass in the fora of very fine strands** Dr. it, Sray, in his publication "Attorneys Textbook of i-edlclae," states* "It is admitted that silicon dioxide is the only substance capable o? producing silicosis* Z believe, from the statements ;irea above and other finding? which we cun reMUy place before you, it will b agreed that silicosis can not be produced by silicates ai:d I, therefore, see r.o reason for the statements that have already been made, nw.ely, "that flber*las produces silicosis* because, insofar as 1 can find, this 3`6.ter*r.t is contrary to fact, MMX ** ?ery sine 01 501 0136 WZJ31165