Document RajxMB5bEGzQLQRJ3aBr080E8

PLAINTIFFS || EXHIBIT jmiZM October 17, 1955 MINUTES OF THE ASBESTOS TEXTILE INSTITUTE AIR HYGIENE COMMITTEE MEETING September 7> 1955 IN ATTENDANCE WERE: D,, R,, Holmes J, U, Weber R , C,, Smi ch H, iii Jackson The Air Hygiene Committee was most pleased to have as its guests representatives of the Quebec Lining Association - Dr, Paul Cartier, Mr, Ivan 5abourin and lir, Maurice La Chance0 Mr, Sabourin, general counsel for the Q.A.iMA, told of the history and function of that association. The Quebec Asbestos Mining Association has been operating for approximately 20 years, and its membership represents approximately 6%of the world supply of asbestos fibre. As an industry association, it functions quite similarly to the Asbestos Textile Institute, Considerable attention is given the health problems of the industryc There are two medical clinics; one at Asbestos, the other at Thetford, both fully staffed and uith complete hospital facilities. Pre-employment and periodic health examinations are provided for all workers, . Safety engineering services have been provided by the Association to its members for a number of .years, Hofe recently, an industrial hygiene engineer has been added to its staff,. As a result of the industry emphasis on health, safety and dust control for the past ten years, there are practically no new cases of asbestosis other than those with twenty or more years exposure, Mr, Sabourin stated that the present major health problems of the industry pertained to the relation ship of heart difficulties and cancer to asbestos exposure. Dr, Paul Cartier told of the operation of the Thetford Clinic, Established in 19U5*. the Clinic provides health services to the Thetford people, Pre-employmont and periodic annual examinations include an X-ray-and electrocardiagram, as well as the other usual examination features. Commenting on the occurrence of a3bestosis, Dr, Cartier indicated that after ten years exposure, about SO.h would have some histological evidence of asbestosis (minimal tissue changes not sufficient to be observed on the X-ray), 1(%!> would have some radiological evidence and 2% might have some clinical evidence of disability from asbestosis, __ In reference to the pulmonary cancer experience in tho industry. Dr. Cartier stated that in the ten years of the clinic's operation, there have been fifteen ensea of cancer observed. Nine of theso on autopsy showed some histological evidenco of v/ a3be3tosis. In six, however, there was no evidence of asbestosis, Thi3 experi- ence would indicate a very much lower attack rate than that reported from the British experience of 13/j. PLAINTIFF' EXHIBIT /Ml/-#00#' * Minutes of Air Hygiene Committee -2- October 17, 1955 O . Autopsy study is made of every occupational disease claim case, and as many others a3 possible. Dr* Cartier stated that this was of utmost importance not only in determining the extent of liability, but also in increasing the knowledge of the disease process. Hie clinic has not done any work with intermittent, poBitive pressure breathing, although some use of cortisone is being made. The experience to date, however, has been insufficient to justify.any conclusions. Dr, Cartier expressed the opinion that considerable research must be cone in the fields of cancer and heart to define more clearly the role, if any, played by in halation of asbestos. l/^ Mr, Maurice La Chance told of tho experience in dust control in' the mines and mills of the Association members. Annual dust surveys are made at eleven mines and re ports submitted to each. The standard U, S. Bureau of Mines technique is used for surveying with-tho midget impingor. For fibre evaluation, the definition of the length being three times the width is applied, Mr, La Chance stated that Gince the program was inaugurated in 19^8, the average dust concentrations have been reduced 50/ In general, the fibre content of the total dust count ranged from 1% to 12/J, In his opinion, the most effective dust collector system to date is the bag type Wheelabrator unit, John Weber reported on the bag dumping unit now in operation in his plant. Photo graphs were shown and John indicated that full details may be obtained from the Wilkra Company, 71 Denton Avenue, Hew Hyde Park, Long Island, W. I, Although dust counts have not yet.been taken, visual observation indicates complete con trol of this usually dusty operation. The unit has not been in operation suf ficiently long to estimate the maintenance and operating coot. The shaking cycle is less than one minute per bag, and John indicated that the bags were shaken considerably cleaner than by the hand method. A general discussion of fibre conditioning agents was held, and it was suggested that the experience of our associate members might bo of value to the technical committee which is further investigating this problem. We herewith extend an invitation to each associate member to forward a summary of its experience with fibre conditioning as a means of preventing dust control. H, II. Jackson Chairman Air Hygiene Committee r- v.- fuse Control by H-sar.'s of Hear i'rcacc=nt C.v) . Prac ticed in the Asbestos Tortile Industry PLAINTIFFS EXHIBIT 3 *4- Introduction. Down tnrougn t:\c. years loo .Manufacturers of asbestos textiles and ether asbestos products have endeavored to reduce and control the ar.iov_nt of c.ust re sulting iron the processing of fibers utilized by this industry. Other fiber processing industries have successfully used oils ar.d ertulsions for such purposes and it has beer, assured that so:r,o such techniques should be as applicable and equally successful within .the asbestos industries, haw aver/ such has r.oi proven to be wholly the case and, in r.;ost instances, the results have not warranted the processing involved, ^ In order that a composite picture and understanding of the industry's efforts :* A 1 ^ r'n j ry no'i, A^V (]r'' ^ i^T. r. n- r> ^ 3 r\ / 3 O ^ j ^ 3 `V r: * - ~.*> Institute has collected ar.d assembled the views ar.d egressions of e:cperionce of its verbera and ih.e ccnoilairon of these renarks is herewith set forth. Vac indentitios of the contributors arc not here revealed, however., the results as reported ;n*o verb a tin as submitted and the over-all expressions present the re presentative views of that sergnent of our industry wiiica is cooperating in this endeavor.. lonpuny A - (l) Cur eccoericnce in using Asbestos Fibre conditioning oils, evulsions, water, etc, dates back to January 192y, Our first eocporicnco was use of the Bourne Gchrymser Process of applying Breton ;hii novel Gil ~ Tliis oil was applied,.by sprays into the Fearnaught Picker - Feed Hopper - appro- :inately bv weight, After probably two (2) yaars it ires abandon.ad irith conclusions as foTilows: - i:o noticeable * n ' ` =Vr. P. showed no improvement in waste, running conditions, or in yarn tensile. Plenty of trouble was had with unequal distribution of the oil -- gobs cf oil soaked, fibre which clogged up our card clothing. In 1929 we used ;,':i and w?. Furnace Oil (Gas Gil), This too was sprayed into the Picker Feed Hopper (DaVilbiss Spray), /-.bout 31 by weight was applied. Dust seemed to in loss but dust counts ware not then being taken, / 'Je tried an emulsion with Fuel Oil, a?_so soluble cutting oil, ar.d Atlantic '.fool Oil "iy-b This latter was used on harsh Arizona Fibre and Awe site. The yarns containing Fuel Oil could be used only for woven Friction ilatcrials -- not cn any product containing rubber, ' Ir. 1P30 wo aspirated, our stock to the 2nd Floor by air ~ then tried spraying the PLAINTIFF'S EXHIBIT MO '>. vised sprinkling cans at the batching units, ilia3 application was as satisfac tory as any spraying but still we pot oil soaked gobs of stock. Cur oiled stock -has stored in large bins - we had to discontinue oiling at this period because of the 'fire hazard. :-.r !::: used an envision v) pounds lull ;!'172 oil, ICC pounds water, 2 ,0 pounds Triethanolamine and G pounds Oleic Acid, in 1533 wo blended -,'i Furnace oil two (2) bol'isies with. Gulf oil #372 one (1) Tol'sne, In libO 1:3 used Sun Oil Co, ;.:5?2 Asbestos Fibre conditioning oil also used Sun Oil #536* This we used for about throe (3) year's. In fact ire installed tiro (2) 5000 gallon tanks and bought in carload lots. This was applied to the batch C^y-sprinkling can. .. Vie triad C-ulf ,7560 id.th a flash point 320 degrees ?, In 15'bii we installed the Texas Coupony1 s Tex spray on our cotton machine - ire hoped to get enough oil on the cotton so that in carding the asbestos irould ab sorb sufficient to reduce the dust. Ue could apply only about. .55 (l/2 of l5) This only helped to reduce tbs static in unrolling the blend, of cotton and .rayon laps. It did not reduce dust at the cards * In January 19h'f ue discontinued oiling :asbes tos stash. In our experience lie have run a card for six (6) peeks with stock wet with water by sprinkling cans at the batch, Running conditions were satisfactory and no ' damage done the card clothing, b'e use a small amount of Arnosite ~ this is wet in the pan crusher with 65 water, ' It is the opinion of our ilili Management and our Laboratory- that it takes 6 to 105 rater or oil to appreciably reduce asbestos dust and in carding this is detrimental to good ranking conditions > In 195-1 our interest was again revived in tliis subject because of a report iron an AiSber, tos Manufacturer in Fngland, It was reported that this company is oiling asbestos stock by loading about l5'00 pour.ds in a cylinder lh feet x 3 feet and spraying oil therein while the cylinder is revolving. They are using 505 mineral oil, 50b> water plus the emulsifying age.nt, \.:e have done no experimental work along th.is line. Coneany A -- (2) The. unit we use to'moisten asbestos yarn on whit.in L-Frane bobbins (appro:djaataly 26.or.,) is idle Kyrrolit Yarn Conditioning Machine (print enclosed), .mads by Kearny Ifg. Co,, Inc., Kearny, its; Jersey - iiodol #3AI Modified. The ,!nodified" p.ecns that the machine does not contain punn and filters usually furnished as a part of the r.iscliinr: when rueirnulnti.ng, the watting agent, Kearny Company make and sell this compound, b'e use only water. >** V "1 - ,1 ,r .'a use wood bobbin: rr.d ewoevicnced splitting due to water until T.ro treated the aobbin irith Penta-oil iho percentage of nolo turn picked up by two passes averaged 7 to G/i - 1 '?/, on >, / blunkot ton i: to u bo: ^ > * s' rv >-- * -* i nci -- ' -0 -- > -> S'" " c h n i' ^ " .y - - * - .y in -i - \ -*' * r- ~ . _. O. > W> < -- .t .< j.b.c percenta pc of moisture in the twisted yarn varied, from 5> to 7o depending on type and mount of brass, sine, .copper cr lead wire, during the three year period in operating we cep eric need difficulty with one type / .__; . c.l U : C-I -. J ; C- J - corxy.ziXLi\r otlsz v.z.^r.o vire aivor cei-- in z^ bins for v:eel:o corroded, and caused trouble in weaving bines the yarns are r.ot uni for:.Ay '.retted wn'd get spots vary i.-st. This reduced the tensile in 12 cut and lighter yarns to the e:rter.t that the yarns broke at the bobbin ( our bobbins are uJ.ncoc nore-serve ally. op. the twister spindles) , Last July' and August was very her.id and for several months ws discontinued use of the bygroiit machine. October 193*3 we again started, it's use but put the yarn thru once only willed cut tlie amount of moisture in half. Vie are not too much concerned about the variation in moisture from yard to yard because in twisting 2} "3, or h ply the finished yarn is pretty uniform. Personally I cannot sec any great advantage in rurrihg with 3n moisture, Car eroerience is and lias been that it takes 7 to G;J moisture to reduce the dust to any er.tent, Up. ha.ve not had dust counts taken to measure the difference but are nor consider ing purchasing equipment and training a men to clo so, Within the last five years we ha.ve replaced core of our twisters iritic fly iram.e3 and know that the dust is less on.these machinesTo what ewtent tills is af fected by soindle'speed we clo' not know, Tills week we. are cutting the twister svji.'.dio rooed from 22C0 to HCO on one machine for Company D We feel that there arc nan.7 advantages. to be gained from "Fiber- Conditioning51, Probably the tub most outstanding advantages are; Increased Yarn b Irengib. and Dust Reducing* lure ha:: been that if the I'J.u'./ 0: ir.-.tnv ia.I decrease:;., then there in too much conditioning ogent for the amount of fibers, w'c also haw er.pericnccd trouble with the spray head dripping and having large drops of the agent present, how ever, uo believe that in time both of those clifficuities could be correcced> ' '" r"v,''-rU'f' Cnr-w:f: on_in~ Arrents . g.t tempting to tbU-/ ~J PLAINTIFF'S EXHIBIT WO * (l) -- lfool Oil Lubricant purchased fro:.', finery Industries, Cincinnatij Ohio. .This mas used 0.3 0. 1 to $ '.facer e:.mis ion solution. Hovaver no vere not entirely satisfied uith this agent, since it ves costly and-involved nixing uith '.:ater. (2) - .3? Gulf Fiber bp ray C.11. purchased Iron The Golf Oil Ccr.oar.y. This was used full strength directly fro.-, the dm. Vie -..-are very eiaasad truth. tills agent frc.u a dust and fiber loss improvement angle, however "there ifas no im.provcrr.er.t in the strength of yarns. j.vpany C ^r>**r : n p-r* i/rT 3 eirpcriuentod uith cy iron iude;: as a fibre conditioning gent, This vr.s used at a strength of about Isfi. U'.r e:rp eriments uith the type of silica conditioning agent irere not satisfactory vie to clogging of the nosslcs caused by the silj.ca hardening each - tine the pray uns stepped. After several months of attempting to cverce.v.e this difficulty 3 abandoned our fibre conditioning system. . ri response to the project undertaken by the Air Hygiene Co.-nr.iittee, uo have f'vestigdtcd materials sold by three Companies. I first called in Bill-BIcrlin of the Hew*1 York C-. Y.ev Jersey Lubricant Co, uho ihsed ur- that they did not have an asbestos conditioning oil among their .roduets. However, hr. Bierli.no advanced tills information lie advised that , 'me asbestos manufacturers were using a combination'of Essote:: oil, 2p/, and alf f96, 75/- This is a high flash, clear solvent. lie also advised that some .irpet yarn manufacturers and asbestos yarn unnufacturers installed, the spray juipr.ient at the feed bones or in the blending units at idle Picker Hoorn.'. He idvised that a hb'.irrch oil burner spray nossle is used pre-netered in gallons ,ur hr., rating 5/l0 of a gl, per hr, to be sprayed on l,CCO , per hr,, of dieting. 'he price of these oil-burners spray ncr.u3.e5 is 31,13 each and they reec.vier.d it least three norzlas per ir.sici.l atiori, The pump used an these installations V; a gear type pump manufactured by Broun and Sharp, It is their /,il pu.no> tost is ^33.00, Tain pa,up should be equipped uith a 12CO rpn quarter horse ;otor,, The cost of this pump is .approriiaately VO3.00, The usual installation is set up using a 3/0" pipe uith a by-pass to thee off e;:cess solution, 7iris quipn'.rnt lias been set up in a carpet mill for a total price of 377,GO and nuld possibly be set up in any mill. for under .'100,00, including nossles, "Jin, motor and pipe., up. Gil Co'.'.oany iiey advised that their m53^-Sol;vu; blending oil for asbestos fibre conditior.- i'g bo used. Some of the '.'.embers of our institute are no:? using this type of 1 -.'iiic'n :i. _ _______ ____________ ... kesearch Director, ,on Oil Co., advised that to h"is Irani,'ledge whore this ins. tallaatio. n* is be--in**g '.sed, it is very successful. Be recouner.us that about 1/2 of 1/ to 1/ of this .jo oil 0-0 used an:! particularly if 3-/2 of 1/ rs used, it should have no .3 CCi T/tOr* p f *rPC h0. ifS*''! r'^r-y rr> t" 'in 'ipv nvnr-nnf * ^ PLAINTIFF'S EXHIBIT __ Proctor & C-amblc I'e contacted hr. H, F. iicbel, Field iigrr of the Textile Firlshe::s Sale-3 Capt.j 33rd G Arch itsPhila.^ Pa, hr, ile'osl gave the '..Titer a run down on product: which they marv.faa vto i tor ta::tilc' fir.ishii: s: vs mo: ?l:;o. yarn nor-lit ionic : anulsions, They are row in the process of excar-i:-.anting in their lab cane of our yarn with their various emulsions end they nay cone uo with a reccmer.da- ticn within the next feu weeks. Vie have recently installed a spray pump equipment using Hcuarch type oil burners spray noccles, he have installed three of thesa r.cnr.les in. our 2nd.feed box ;* p ' Z> gr'n o ' '* run spraying our mixings with this method. howeveiq we only used about l/2 of IS' of the Sun Oil 533 blending oil. Vie are going to y.ax::-e aa n additional installation at our 2nd blending feed on the conveyer which will y^iv-o us two sources of supply`and will also bring up our spraying iron 1/2 of x,`> to 1/, This will.be dene by placing tiirea additional spray n.osales at, rue U"} -- ---- r. V ,* -i -if] '~ VJo will not male any further tests with this spray equipment until we can have . iir, VJilliarrij the State Inspector, present when in operation because, wc wish to . make comparisons of air sampling while the spray equipment is in operation as opposed to when it is shut clown in order that we nay evaluate oux* dust conditions with, or without this sorer method, I hope that hr. billiard will be with us within the next few wools ar.d at that tine these tests can be made, 5 Cono any i) Sun 533 and Gulf 561 is being used. Both have been found quite suitable in reducing the dust during the various operations, The amount of oil applied ^amounts to appro:dmately three-fourths to one percent. The oil i: implied by yhears of compressed. air-operated spray gur.3. Colloidal silica lias been -experimented with ar.d while it has given satisfactory results in regards to reducing dust conditions^ it was found to be difficult to handle inasmuch as the noserings on the spray heads would frequently clog.. For this reason the use of silica as~a lubricant has been discontinued. Company E - HEwiCpi iJGED__ ' ." h 1) Applying oil spray menuilly with DcYiloiss gun'to fiber layers only in floor batching, 2 o Applying oil spray with a mechanical traveling spray on the feed aprer. of the picker- 3- After employing either methods 1 or 2, allowing material to stand 2a hours before carding. " r PLAINTIFF'S EXHIBIT W'0__ 6- - - UhniGTS 1 AI7D 2, s there uas basically not too much diircvcr.ce in these neihods., the result: Iso './ere not too anoarent, -- -< *i -- T i . * -I * f r 3 ^ ' t ^ : )or -v-o.v.i ..s.cenet :'.:- ; `..i 1'.^ ry ...Lth she advice of Dry :launiir are one-half ncr cent oii? the ouji Gil Cenpury, initiai applications ;c in h i s a rieneoj three-fourths to one )or cent caused dropping ends and created an excessive fire hazard. Thile these concentrations caused r.o difficulties on the machinesthe dust or.i'itior.:; :rore not - r.o lice ally rir.urovacU it should be recopnicod hnvevor. that fnese irere visual observations r.ot substantiated by dust-counts^ and there fore are subject to question. no concentrations -wore raised to as high-as three ner cent before sorr.e ir.orovcc.usr, cone->1i rr -X ry --i - ere observed. There high concentrations caused such ;reat difficulty in carding that the process 'ires unfeasible The material clogged the vires cu the cards and gurricd the tape condensers, hue finished product at the high concentrations also old not meet purity standards for certain uses, I r.fSUi/i'S 01 ilhTHOD ,j. - ; .1 "!ecause the cil-sprayed material exhibited. a tendency to agglomerate and cause neves distribution on the card cylinders^ the raterial ires alio: red to stand da hours before carding in the hope that the oil vruuld diffuse evenly tSiroughout. If diffusion did occurj and tills is problcrr.aticj no improvement /as noted in the carding operations., . CGilGlUpiqi The cuesticnable uclvnnbagcrr- did net - justify continue! use of the oil spray nethedlij and it uas, drooped after a short period of use. Company F, methods used: All of our vork lias been done by pressure spraying, h) Agents^, from standpoint of offo.stiveue:;:;: The .only agent that, ue -use that has any effectiveness In dust control is spraying oils, and these can only be used vhcro tiie end product null permit, 0 Agent: from the standpoint of I'ndcsirable 'oron orties: 1) Saponifiable oils - not desirable because evaporation, rate too lo:/ for production nurnoscs. 2,) :'rop/iene Glycol - does no' pi.vc any urn ncr.os over conditions, - oparr.T-j.ns 3.) water Soluble he sins - does not give any iv.igrovof'.ents over standard. operating conditions. u