Document 3QRvrQQ8VZGG6wDnZa4aYG9zn

did > Tin- HNCAA.Ic jm * '' j Septenbc- 29, 1943 Dr. Ludvig Eehtcen, 25cutIta Director baticnal_AdTl3cr7 Career Council u_ es --- irla for your letter of Septenber 27. I various pnei.ucooocorJ.ose3, asbestosis ranh3 next to silicosis in Industrial inportancs. It is a definite disaa3e entirely resulting in disability in advanced. Casas. It `I3 charseterined b7 flbrceis vhich begins about th.9 bronchioles and aoreada into the parer.oh.ytu lo-r a 3 a dirrue e obliterating fibrosi o. Chronic fibrous conccnrdttan': The- rubbers of persons exposed tc ashes* du3t in thi.3 country- is difficult to establish, cases hare occurred-in the fabricating plants of berth Carolina and Pennsylvania. vhere the fibrous nineral is vove*r* vi T Vv U w m to produce asbestos fcloth, brahe bands, ar.d electrical insulation. A considerable number of persona are also exposed in the electrical industries vhere Asbestos is used in insulating not only viriug but cctcr amatures. The U. "2. Havy has had a real crcblen froa the use of asbestos in'insulating narir.e bailers, electrical installations and other insulating work. X hare alrvays felt that asbestosis probably r treated no specific predisposition to pulconary cancer. Ecvever, 'evidence to the^'OTmtruhy-'CUTrtinues tcr-acuunulatev In the last' nunber of the American'Journal of Pathology, Honherger reccrta 3 new cases aahing a total of 19 in vhich the tva conditions are associated. Xn-r ^is reaeon I do not believe that v? c \to neglect the natter ouch longer. Under separate cover, I art sending you tve copies eacfi~~ST^reprinta describing earlier Saranac Laboratory studies of the subject. Sincerely yours. 0RDUCLED U1W~ JM-83 t r.r.: n R Leroy U. Gardner, H. D. Director ..000-10237 September 21, 1343 Dr. Ludrig Eeitcen, Lzecutive Director Saticr.al^Advisory Career Council ^ . .__. - ~ V ~~ - -* r ,, <+ 1M .terra enu Th.?..-.ha fer your letter of September 27. I nay state that. aneng the various pneunonoconioses, astestesis ran>3 text to silicosis in industrial inpertance. It Is a definite disease entirely resulting in disability in advanced cases. : ~Zt 13 charsetericed b7 flbrceis vhich begins about the teminal- bronchioles and aoreada into the parer.chyua of the lung as a diffuse obliterating fibrosis. Chronic fibrous pleurisy ~~d e-unhyssua are essential concomittant reactions. T--he a__t--_3ve` rs of persona exposed tc asbestos dust in thi3 country is difficult to establish. Host of the case3 hare occurred in the fabricating plants of herth Carolina and Pennsylvania. vbere the fibrous nineral is voven vith cotton to produce asbestos fcloth, hr aha band3, ar.d electrical insulation. A considerable number of persona are al3o exposed in the electrical industries vhers Asbestos i3 used in insulating not only wiring but no ter aroatures. The U. "3. Havy has had a real problsn fren the use of asbestos in-insulating ranine boilers, electrical installations and other insulating work. I have always felt that asbestosis probably created no specific predisposition to pulnor.ary cancer. Zcvever, evidence to the"'emtraiy- uui rt inu es~"to--acourulatev In the last' nunber of the Anerican'Journal of Pathology, Honberger reports 3 nev cases raking a total of 19 in which the tvo conditions are associated. For this reason I do not believe that vs can afford to neglect the natter ouch longer. Under separate cover, I an sending you tve copies each of reprints describing earlier Saranac Laboratory studies of the subject. Sincerely yours. ... PRODUCED T.nr.: PR- Leroy U. Gardner, M. D Director' .00010237 HMUO-Ut .m.. j.*