Document p2ZQn5v2K9KMO47dgMo7E2Rz6

PLAINTIFF'S EXHIBIT I t '>' !; ti. .1 I--!u ii11 c.\ u :r. ccs Vcr.tilo "i nsti.su to i larch 10, 19jl: **". , * -- j *'. I . , , w ,, ( . A .> -- V.i-nurv.y program w-.s part:.,:ip itef in by seven plants of si:: r.er.bcr companies. Samples vore taken under standard procedures at similar lo;a- t'or.s in all tho slants, iho sarnies were forwarded to the Chcr.dcal Ineir.Derir?' laboratory of Travelers Insurance Company, ar.d analyzed lor dust particles under 10 rJLcrons in size and for asbestos fibers 10 r.iicrons and longer at ICO and 200 magnifications, light field inclination (a standard technique). Detailed report: have been forwarded to each participating plant ar.d the summary report vrithout dark. identification was discussed. A general rcvic.; of the report indicated tha j. . 1. thora tras no fixed relation of cuantitj- of dust to quantity of fiber in tho samples. It x/as evident that some dust concentra tions which would be considered satisfactory under present state standards contained an unfavorable concentration, of fiber 2. good, control is indicated at r.'.ost sampling locations in most plants, by the fact that fiber counts were below the tentative V r.axirvm allowable concentration of one rilia or. fibers per cubic foot, rccoraiended at tr.3 1932 Saranac Symposium, 3* the data Till be reviewed statistically to detemine whether tire liighor magnification nukes possible the identification of a significantly greater number of fibers. A separate report trill be forwarded to co:mittee members. It was reported that the lieu Jersey Standards arid Code Committee had accepted for adoption the recommendation of one million fibers per cubic foot as tho maximum allowable concentration for asbestos fiber, Definition of fiber and reference to the analysis techniques is included in the Committee Js recommendation, The Air hygiene Committee members requested that infcrr.'.ation used in discussions with the hew Jersey Code Committee be forwarded to each in order that pertinent inu'orr.ation bo passed on to agencies in other States, The American Conferanc-a of C-cver mental Industrial Hygienists has received the Saranac Research work but desires to have more extensive data before Modifying its present list of threshold Units, Studies such as ones we are working on would be of considerable import to this group, 1he committee recor.imsnded that additional surveys be made in those nenbar plants where both wet and dry 'weaving Methods are used, Samples will bo taken during each process type in order to evaluate the effectiveness in dust control of wet weaving. Analytical laboratory services will. bo arranged for as in the current survey. It was further recommended that all future surveys be neither companies whether node by their owes or state technicians be-analysed for both the dust and fibor content end the data included in the Committee records. In a review of fiber conditioning techniques several Members reported trials of various materials, liith several, there were visual improvements in dust levels though none offered problem:; oC application. It was proposed that at our ne::t r.actir./, each nem.ber would report on his company's craverience with nat-erials for fiber conditioning and the cumulative list would bo submitted to the Technical p~ICommittea end to the Fellow lor evaluation in torus of oroduct characteristics. \ PLAINTIFF'S EXHIBIT -2- 3?.Q usJ- Os It was the consensus o.C the Aar Hygiene Corn.'.! tier. that the problem of dost daicr. J.r.acion in fib-v as a raw Material was- primarily or.a which would cosoem til3 * Technical Committee. Alter a standard measurement technique is dcvelcned, the Air liygicr.e Ccr.vittee would then be in a position to study the relationship of dust content of fiber to tiic clust levels during processing. Ac resolved from the discussion in the General meeting, the Air Hygiene Cor.xvitte-: ..ill prepare an outline of the inforotation, pertaining to asbestos which would he appropriate for chose making inquiry cor.;erring the health and eseeets of asbestos fiber exposure. The outline will os submitted for consideration, at the needs Board of Governors Heating, Correspondence fror>i our French Associates pertaining to d.ust control methods and medical experience was reviewed and discussed. The techniques described in the letter cn dust control are similar to those used by various .v.o.-.ser s-c.r.psales, It was reported that by visual observation, considerable improvement was noted. However, there is no' data concerning dust or fiber counts. In the opinion of the iiedical Officers, 1, there is ro relationship of pulmonary cancer to a sees to sis in the French experience, 2, while as'oestosis does not predispose to tuberculosis, observation - was made that recovery from T.D, was difficult. --' a positive relationship v:as obsgrved between alcoholis:.'. and asbastesis. Vh * Summaries of' this correspondence are attached as a part of the minutes. J, 17. !Jeber presented and discussed his design for twister-spinr.er ventilation control. Air Hygiene samples indicate dust level is less than one million parti cles per cubic foot.. Although no fiber analysis was made it can be safely assured that it 'was considerably less than this, wot only does the design provide cruel ler,t dust control but also provides a substantial guard for rig and spool breakage k Gra'.ring of this design is reproduced as a part of the minutes. The united States Public liealch Service study on irvitrvmentaticn was reported to be in progress. The samples of asbestos have been forwarded. The study, however, will probably not be reported for a considerable length of time since there are a number of instruments whose efficiency is being determined. Asbestos is but one of a group of five o.r si:; materials being used. The following are excerpts from a letter on as'oestosis submitted by Dr. du iiesnil du Buisson, of associate member Soclete Anonyms Francaise du Feroco, As'oestosis and silicosis are entirely dissimilar diseases. Silicosis is a clear- cut dir.race with a typical ::-rry pattern and a typical clinical picture. Asbastc sis on the other hand, has few if any clinical signs and no characteristic x-ray pattern. .- *" : :h 'w-'krV :-:-ray picture ar.d cha presence of asbestos bodies in eh:; sputum, The French authorities believe that the presence of asbestos bodies in the sputum are diagnostic of pulmonary asbastosis, The American authorities do not agree vdth this concept. Asbestosis is not a progressiva disease and it can bo arrested ar.d cured by re moval of the employee Iron eupasure. There are no reported cases './here pulmonary carcinoma is associated ;rith asbestosis. Alcoholism plays an important part in the development of ashestosis for this condition predisposes to many tj.pas c: lung pathology. It is noted that 2/3 of as'oestosis cases found in the factories of Claigny ar.d Fontaine uere alcoholics, . Csoestosis can be controlled only by adequate ventilation of the factories., by annual physical enadimtion., ;;-rays ar.d sputum analysis. The Doctor also quotes as follows from a letter he received from the iiedical Council of an insurance group: ''Great caution should be used in the diagnosis of such occupational diseases ns asbestosis for if an employee is unable to vrork because of this disease he '.rill receive compensation but no medical or drug bills associated with his illnacs -.dll be paid," ... s Societe Anor.yme Francaise du Fercdo Dust eliminating equipment in asbestos factories at Vallee de la Vera, I:', the asbestos preparation sections pneumatic conveyors are used. In the 3sin ning and t'.dstir.g ar:d adjacent areas no great amount of dust is produced. In carding and weaving special exhaust is used. Carding machines are built ovev long shallow trenches ar.d entirely sealed from above. Air is drawn in at the loaders and the combers. The trough is connected to the esdiaust system and kept under presses. Air shafts under the shuttle the entire width of the machine and funnels placed above the warp control the dust at the weavers. The speed of intake at orifices and in air shafts is 1$ to 10 cubic maters per second. It is the objective to remove the dust at the1 source or to enclose the apparatus as completely as possible maintaining it under pressure. The duct is collected in a battery of stocking collectors and the purified air recirculated. Respectfully submitted; tl i* ' Spindle: i ^5 ^LMOV'AblL f\ ^ rvi i: r"! (v jcAW.-Ase.L5T oi= Tti \ ! i IjV s> T j b UARD E. i ` , I. r.i # . v. 1 t- -r b ^ # , t * . * I IT'' p * . ( W * *" ( " \* Li I .- \ PLAINTIFFS EXHIBIT ttO____ S3 \T^ iu V'' A > -< - ------- N . . _ . . * I - # . y \ ' I =\ .-s-A i : !i . . 1 r! A ,.n' rVt.i ?v!v~*l JZ .? zj-. ~Z. V (\ 0- s v'-) o ..`W * o r: i.' L -n /- rL o \f) T,-- * * 4.* -J cz z: v; -> If) *) \j_: NT-? \*l G> !i M* % Jr V i trv Li . 'I lA V [ .. i T. \> \ - .v * . 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