Document zQVgBe7KdDBbKm5xLJ3g3gDj7

2 S< "N o r w o o d " BRAND TO DUPLICATE THIS FOLDER ORDER Slot>$A$?t*nielcs NO. 8 1 1 /5 MADE INU.S,A; 1 14 N14825 C7: -TO O Ui Eighteen men exposed to lead oust at tae plant of Lowe Brothers, Inc., at Dayton, enio were examined at the Kettering Laboratory in august, Iplp. The examination was designed to assess the general health of the men, and to establish as far as possible tae presence or absence of any disaffection relaten to occupation, particularly lead intoxica To this end occupational and medical histories were taken, symptomatology was studied, a complete physical examination. Including neurological examination and chest fluoroscopy, was performed, certain laboratory tests to imicate the presen or absence of infection or disease of the kidneys or olood forming organs were carried out, and exposure to lead as measured by the lead concentrations of the blood and urine, v/us appraised. Of tin eighteen men, five were found who had physical disease that needed attention and made them undue risks for work in an hazardous tr.ae. here was no evidence that their load, silica, silicace or solvent exposure had contributed to the conditions from whicn thoy suffered. These men were " kwhoso X-ray and laboratory findings co-id be interpreted as evidence of active pulEionary tuberculos .who had severe and extensive varicose veins and a job in which he was liable to traxaatiae them; ana chest X-ray tight be interpreted as evidence of active pulmonary tuberculosis, and hose symptoms warn si `iclently suggestive of heart disease to contraindicate his lifting or climbing stairs, ana ca indicate che advisacI,,1ty of furt-i1X* uiO.y by nis family physician. hone of the id men had symptoms suggestive of ,,cad Latoxication ? levels of leaa coh.ent rn.ilon In one blood a arme hie members of this group were uouble those of ?iny no occupational load exposure ( * 1 g. 1 ana 2 j* .`here <?aa no clinically or statistically significant difference ojiween cue two .groups representing one ycars ifa.6 una (facie 1 ) and none of the inuiviuuals cotaeon to coth saov,ed any si^nifl cant difference in the load concentra Lh oither blco- or urine (Table 2} on th0 two eccasior These analytical findings suggest that trie intensity of the recent lead exposure 'has not differed appreciably from chat of 19 I4.O before the exhaust venti la cion was installed. The fc;vo sets of analytical data are consistent with the clinical find in.*3 on both Docaaiocs, and with due previous and intervening experience of tne plant, with respect to the incidence O X tia poisoning, for it .Is to be expected in a group of men with this decree of exposure that an occasional man either because of ills working habits or the ...acure .. nave ahosn chat safe working conditions can obtain, and that the potential hazard has not changed in those six. years, Indicates that the occurrence of an occasional case of lead intoxication is not a necessary concomitant to the paant operations. At the end of t-xia r sport will be suggestions designed to prevent cue occurrence of occasion.1 intoxication. -iilea no silicate exposure free silica is not an h&surd at toe plant, since _l ..a -.jet* co>iwtXXiiwCi. oo .*n agprecxao1 e oxu;*nii ~*i ai*p oi 0.1Liit rU bijX*-X-cAJ-to ' onciu.erable quantities of co.-iilnsa silica are used, in the form of asbestine, :.o have been informed by nr. -A. f* fasig (9 -1 7 -14.0 ) that cue asbestine used at foe plant lx a fort of talc; ''tre:;:olite is undoubtedly the parent mineral.*1 .Yllliam Siegel, A. u. mith. and L. Greenberg have reported (Stuay of talc miners ana millers. Industrial bulletin 22, 111 and <12, kov. and Dec., 19 4 3 ) their observatio on workers mining ana milling talc in St* Lawrence County, h.- Y. They conclude from evidence which we consider adequate, that "thi3 ioudy identified tremoilie talc ue a silicate dust capaolo, like asbestos, of nuus.1X1J 1 disabling pneurnonoconio 3 ia It reveals distinctive patnological findings associated with const!tut a definite industrial hazard requiring control of fust by suitable engineering methods.51 Twenty-three men were examined with respect to this :azard. among these, eighteen were tne mixers ana recel /ars referred to above in connection with lead exposure; men, ana were exposed to volatile solventsj ion, an wer receiving deoa-cu.cent. ,,he seme type of clinical and laboratory observati . s.V. V lined above Inn rreeliaattliorn to lead exposure, wei1 carried o u t . 0 ail these men except ,ha three last named, In whose o a u . ! .1 0 X ^ H Li Zl kJ~ J S s & cilV iL jxaiaination of blood smears foi iiin.i wer0 0mitted, aru: then means of study wore limit t o .0 0or:oscopic -ray eexxanmJinations of the chest, ail the G i l , oith the exception of A . nd W fc naadd sstt<ereoscopic chest X-ray examinations, ali. out and of this last group, had fi oroscopie c.n-3tt examinations. He symptoms or Xtray evidence of pneumonoconiosia were lound in any of those men. This same conclusion resulted fro; if study of a group of 15 similarly exposed employees of .'.owe Brothers r?o. in I94.O. It Is concluded that the hazard of pneumonoconiosia slant Is satisfactorily controlled by measures now a-00, KE 0013331 a r e considered bnc oat o. n i l leant do cause o f toe nature of bneir jobs ana the extant of their exposure to benzola nd eunylene cichloride. fhose three aen, also and and the eighteen nixers and receivers were examined as outlined .reviouaiy, .vibh special omohasic a ,on too detectio of possible signs ox* s.naptoms of oiseasa or the Sidneys, .liver ;>x* olood-form!n.:; organs. Certain special stun; lea tore carried out u ion ti;.c forced elements of tie olcou o: the first named three men, together wit.i tests of l.ueir liver function, data hie exception of B J | V > <*na it ..a coneiacred that none of f.re .on rave evidence tout their exposure to solvents as more tnan u nuisance, If that, a thin, aging man, seemed to nave had tna greatest potential exposure to benzol and ethylene lie xioride. n'hrough an operating error on one occasion, he nad boon exposed to solvents to such a degree as to develop symptoms of intoxication. At the time of nis examination, he v/as found to hive a number of ...lid abnormalities, some of which might be interpreted as related to hazardous solvent exposure, ~ut none of vhich seemed to have caused any disability, nevertheless it Is felt, because of the .nature of the operations ne is handling, as neli as his physical condition, that uto operation should be redesigned to give in excellent condition. --his flnuin, snoulu. not be communicate to him because at is probably of no clinical significance, and night give rise to unjustified and unnecessary anxiety on -.is part. It is suggested that ne and certain other man might be rechecked periodically* has certain symptoms chat night more properly be rxferrod to oho aging process than bo exposure to solvents. It couia seem that ,-j is an undue risk Tor such exposure. .i3 -iixuila be followed by :.l3 family physician after a stereosco ..-.raj examination of the chest is obtained. nas nad o: uptons wnich ns attributed to solvent exposure in coo past. It is felt because of mis ciaotionai susceptibilities that he should be kept from solvent exposure in the future. acrolein fhls hazard has r.ot cfcen evaluated as yet, dumexar.y arid recojianendations A. fhe lead hazard i3 essentially as i t was a t tn time of tuo previous survey. iiis potential hazard is appreciable, but the actual Jiasard i s small under t h e present a n a previous conditions in too plant.  i n c r e a s e d , a vacuum system b ain ; employed co remove o u s t s which a c c u m u l a t e on t h e f l o o r , r a f t e r s , unci e q u i p m e n t j (a) m a t men m o load mixers or ball mills with, loaded zinc and pigments containing asocstine >;:? r -.-quired t o w e a r -ai s t a m s w h i l e e m p t y i n g o f t h e s e a t e r i a J Ls; Jnat tiie -an *y io ^orlc :.n t n a b a li n g ; a a c h i n e also os equipped w ith o u st ..asks; (a/ The ;:utoka are to be individual, nopt in individual cabinets separate from tne v-erk clothes, and cleaned, moperly maintained ana inspected weekly in tnese cabinets oy one .an properly supervised ana Indoctrinated in the caro of oust masks* (5) That foe severity of tae potential exposure to lead-bearina and other dusts on tho nixing floor be determined main in sac winter tine in order to gauge seasonal V1a*J.11J.OIiS (o) hi; minimum amount o / modical control required to protect the an against the actual auisard mould bo initiated. It is believed HE 0013234 su ffice fo r tills purpose i f both are carried out ut In te rv a ls of s ix months* . . I he h a z a rd o f pneuracnoconicsi3 a t cue p l a n t l a a d e q u a te l controlled under the present operating conditions* fo e p r e s e n t c o n t r o l measures suoulu. be c o n t i n u e d , . t h e n a z a r d o f e x p o s u r e uo v o i a c l l ; a d v e n t s I s a d e q u a t e l c o n t r o l l e d , e x c e p t f o r c e r t -.In c o n d i t i o n s i n d i c a t e d below, fo r vnicn c o rre c tiv e measures are suggested. (1) fhe operations in connection with the manufactur o f p a i n t r e c o v e r s sh o u ld be .-louified to g iv e g r e a te r s a fe ty to tu s o p e ra to r, uau d o o p e ra to r sh o u ld be e x p e r i e n c e d , c a r e i m i y s u p e r v i s e d , ana In ,ood n e a l th ; ( 1 ) f i l l s o p e r a t o r and taw s o l v e n t l x ex* (now hapner) should be examined by s u i t a b l e c l i n i c a l ana la b o ra to ry et.uoas every s ix - months to in su re thy absence of daitage to the blooa, kidneys and liver* (p) A l l s t a n d p i p e s d e l i v e r i n g t h i n n e r mould be is o la te d wit.uin a properly assigned l a t e r a l l y exhausted hood. w ) a l l oo.ncamera unu port., o le tanka should be covered* K 0013235 nen -iad major ana minor abnormalities ior- which they should receive medical advice. -his indicates that xno company xs not protecting itself adequately against suen risks. It is suaqesteel that (1 ) pre-employment and.periodic examinations or uli b.x<3 men expo sea to oust or solvents should oe - n s t i t u c e d . yro--employment examinat ions saouxe be eonprehens1 ve io rio o ic uioils s a o u i a xricX'u.cio <i b r i e f p h y s i c a l ex am ines io n , ..c .-/hlch tim e a f e w pertinent questions c a n oe asked, a m iniature stereo sco p ic b-ray film of the c h e s t taxon, tne u rin e 6xa-.:uneu, nu the specific gravity of t h e b l o o u d e t e r m i n e d , o . xho a c r o l e i n . l a z a r d will be reported on l a t e r . reported ay: heru-y A. kyder, f.D. u'm. f. Ashe, h.D. Date: fepcemcer yQ, 19 4 6 001323G Approvedi ` ^ oooert a . iosx6e , Director .0 .niters and ^ eceivers, 19 4 0 3.70 - 10 (+0 .0 2 2 ) .4 nixers and sceivers, I9 4 G 3.70 - 10 (_+0 .Q2 6 ) ; y a m Inh and lacquer orkars, 19 4 0 and 19 4 6 3.99 " 10 lettering controls (men without occupational sad exposure) 3.936 - 10 (+0 .0 1 1 ) 0 .0 9 4 + 0 .0 16 0.099 + 0.019 o.o38 _+ 0 .0 0 8 +1 100. 0 0 0 .0 50 + 0.039 0.02q-3 Logarithm of Urine Pb, :ax./L J /sixers ana eceIvors, 1943 3.76 - 10 (,+0.053) 0 .2 2 _+ 0.0p3 4 mixers and seen vers, 1ji>.Q 3.8k - 10 (+0 .0 5 3 ) 0.20 + 0 .0 3 9 varnish and lacquer orkers, 194-0 ar;0 1 yl\.G 0 .6 4 - 10 .attaring controls (men ifcliout occupational ead exposure) 3.395 - 1 0 (+0.022) 0.220 j+ 0 .0 15 > ana stanaara error Urine ?b 0 .0 58 + 0 .0 09 + O.Oi^Jq 0.0247 KE 0013 i'iib le 2 Analytical i\ Ln d in p a i n r an a t u d i o u 1rs 19* 40 a n d 19+.6 TJf-rV**Vi.i,e^* *'.9 . ... ... 0 10 0 a ?b | T... /o . 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