Document BvR3XLQmGgp2gnJ2yyRpXMYZX

February 19, 1939 Hr. Bradley Dewey, President Dewey and Alsy Chemical Company 235 Earrey Street Cambridge, Massachusetts Dear Bradley t Beferrlng to oar conversation on Decsober 10th aa to possible differences la the effeots of various typee of asbestoe is. causing asbestosls, yon may think oe mildly craxy in following up e natter ehioh yea indicated over the telephone the other day to be closed as far as you are concerned. While that ie quite naturally the ease, ey interest in asbestosis and its causes is each that Z aa risking being pat dovn as a pest by sending yoa herewith copies of two letters and aa anolosure received sobs tine ago froa Drs. A. J. Lansa of the Metropolitan Life and L. Cardnor of Saranac aa an indirect result of ay talk with you.** ' Ton will note that Dr.rCardner has experlaented with five different types of asbestos,* which X presune are aboat all there are. While his experiments have thas far been by iajeotloa, the best opinion seems to bo that the results of injection are in dicative of those to be expected free inhalation. If this is so', the fact that the five types give similar results by the former ethod aay be taken to indicate that the inhalation effects vould also be aueh alike. Sincerely yours, 1CB 12 LIB Snol-3 Manfred Bowditeh Direotor ConeItcsicr.s rnd .rriah' was 4n indicated by tno .'Inuim/s ci thj itauy _ 1 ml;: .*./rcnr chert_ erti nro^roc hcd bean "acn '.a .rurhin: nr z:rj -to ccuauiCraticna ;Q Cry 'ill but. the'. such -- ceiceccriticiu Zzf-.rjz "2*., ".or- :-v**n .-aducad .c u. caul :'ac tory toml uvorall. fore verb had sn i.:---rove twj era carryinr; arc '..iac.j.l~cici ..-.eh "it - they cr.'.Id Terc'orrraa orlrinall.' d-a^i.-rand, cut *<> r^rr-irat^c -v-err rcb-i-^adLar; ITTust Prc-nucors*. the r.-r -ill nttl.1 rccuired a cere iiuraoLa a.T.cur.t c: v"cr> to reAcer :.h.e duct ' -hr v *c cr .--c'rr ,-rrlo loroi. _oilcwr.--.; cue covercl .occrr-.aijiic. ser.cer::. n : tha cr.nauec :.-*s v;m :-m: _ as the ere u*r.-u-l ty.-vcuu:; jy* tv. holes In the cer-aurt eysujr. oe rar.iu.rcd rear. that r.o '.-."no', tr . c .re any Icwniiu;;. .r.st roteic^nc rsin-i'.nnrjce da rrcvuJa-d ."cr the ccvc~ atd ten ccrn.'<ttc~ v:oracine cereere: aer that tha tie.': or. ill the a'rr~'ni : i*. "ht-r'tctiih cemrs and cui.chiliad _:: - eel cc:cd'..t: cr.. Cana o.' the -nchirvss vnra rrovtuoa with, .uluc-r fLz.cz -.i'.ich. no doubt, tnpre "o:: the eriiaust characteristics co:uicorwbIy ever diesa unite; htrrs'.Mr, khT still lea/ced badly and sacrocicad a "tat deal cl crectus: .i7.TC;**' that ret'Id t-e uttliraa at cchar Ic-cacicta. .'hat oil a;' the tcir-c !n cite ere convey; r..- -,izas be pens costly elesad cr oolrar-rlti creviced id eh. ci:*rt litt.cp, roirevabis ncecas nc-crs such t luji den3 net list: Cre-a those areas -ujd -;ucn Chet s-ittust catacLr.y will not be sacrifices at those "-cents. Tbsro ware co taerr teles it t.-.3 cm* e.trrnd " nertisi of tr.d dry mill set cat that trey ccula net bo arr-.srttaa. :ta: :i iha transesr ocinis 'cr era beinr doses'-toe to ooeu ccn+.nicare be idecuataly enclosed and croridad with e.thaust .'ontilatioc licit ur.t' 1 such tire as repair ana .oaiatonance c: be:1.; oho sxnaust ac:u th.3 era ccnvcvici; -ysttw.s res bean ccr.pleted, til -ho t^Q cn the eh-- tr.L" In nrericen with and he rocuirec tc wear ;a acecuata resriratc at nlu -icca. . njCS cn;lui.lor_; and rocc.:.o..^iiittici3 el the :.u.-crt. I'll recort he centrol neaeuroe einae ua" cf th.3 .'sccr.t3r.datLena - <Cu w.m. w> *. .*3 a M Go* 1lo'> i