Document zzre838Me9g6OMnGEwbzrbvj0

P-MET-328 mSOHlL UD COIFIDKHTIAL Ceneral Ssadquartera April 15j 1949 G. K. foitar Saranac Report HI of ms read with much Interest Dr. In Smith*a ranary Md cements oa the Sirnae (port 'liUitoi nMttoooBloali1 vhleh you Mat to Jfr. Fithsr on Itereh 21, with oeplea to Iran md to m. Zt noi to ma that one of tha molt slgnlfleaat of all tfao findings la that moatioaod la Item D, pointlag oat tha fast that a relatively aaall aaooat of loz^ fibres mb oum long dmage. Zt if important that vo arra&gi to dot*mini whore long flhroa aj exist la tho working atmosphere, vbothor the Mount is enough to esu* bans, and t*e notion to ollminato thm. Vadar "Cements,* Ztoa 3 (a), xeferenm is made to Sr. Geriaorrl statments that tho oit dangerous length* of fibre are those of 5 to 15 alarms la length^ lea Smith goes oa to say that ho iit however, lnollaad .to ballon tho findings of thio report that it111 longer fibres ere probahly more harmful. laferring te Dr. Gardner's earUar statements, Ten Brown mentions that Dr. Gardner ipob of tha harmful fibre! aa halag "under 10 microns In greatoet dlMater* rather thm thOM of 3 to 15 microns In la^th. Also, onto Itea 3 (b), Zen smith refers to Dr. Gardner*a latter to Kr. Rabcarln ef Zebruary 23, 1944. d hie belief that "the tree hasard In asbeetoe plmts in propose tiedel to the Mount of seall. Individual Moruehed fibres la the ctaoepbero . . .* Bare again, tarn Smith mentions his preference to hellers the recent Saranac finding*, which seenad to indicate that action only of the long fibres is particularly harmful. On the page marked "Cements* also, under Z. Ken Smith speaks of tha dust oounte In the nille as 655 to 805 5 nlercoe or laea In length, and rerely IS 20 nleraaa r longer. Z had tho lapreeelco that Z saw the results of a study giving this type of lafometlce, hut don't know whet study It was <r where it is now, Md Z vundir whether Zen smith mb give ne this information aa that we ua look it There la a question raised here about Zen Smith's point under XZZ shoot tho long fibre that Is mined at fbetferd as eoapared with that act Asbestos. Zt was weld that practically any actually processed fibre i 3 mlareas er more In length Md'doubt was expressed as to whether there would be likely to be more longer fibre fhn the Tbetfard erode thee frae ear am after It has reaobed tha point ef being processed. ?rhpi the study I spoke of above indicate Mai fact* la fespeet te this er K*a nay have eons laferaatlea that would eorer this point. We ell felt Zen SUlth'i study to be a very excellent one and pies to ids um ef it In eofualntlng sen* of oar ether plmts with this Baranae study. t oei Teadieer Bren A. R. yiahar Z. V. Smith, M. Iran SAbcurln Aabaatos J. F. Woods-*