Document vVj6KmE0DaENnLKRjdd9JL6d6

"No r w o o d " BRAND T O DUPL I CAT E TH I S FOLDER ORDER 9lol> A ^r tttclc4 NO. 91- 1,' 3 MADE IN U> S. A, N29744 French Operations - Ethyl S .A Thenault - Dacquin - Boffey i o> O' o Room 527 Pari s Pr an o e D ear Mr T b en au l t The questi o n r ai sed I n y our l e t t e r of September 23v& i s one on w hich we h v er y l i t t l e I nf orm ati on f rom d i r ec t observ ati o However i t nay be sai d , c at eg o r i c al l y , t h a t t q u an t i t y of t e t r aet h y l l ead w hich occurs i n l c at i n g o i l as a consequence of engi ne o p er ati too sm al l to be of any si g n i f i c an c e f rost the view of sk i n absorpti on Thus the hazards of I n co n tact w i th such l u b r i c at i n g o i l I nv ol v e The r ep ai r of engi nes w i th q u an t i t i es of l ead d ep o si ts w i th i n them, (i n I s not w i thout some h y p o t h et i c al hazar d. I t e n t i r e l y p o ssi b l e t h at i f workmen w ere engage ti n u o u sl y i n scr ap i n g the carbon out of engi n dry s t a t e , th er e w ould be some ex posure to d u hav e no t encountered any si t u at i o n s i n w hich ex posure 13 hazar dous, and I n g eneral t h i s wo not conti nuous enough to r esu l t i n si g n i f i c an L ead occurs I n the carbon d ep o si ts i n th e fos brom i de, su l p h ate and ox i de* U nder o r d i n ar y the rem ov al of carbon does n o t gi v e r i se to m di v i ded d u sts and th e ex posure, u n l ess conti n weeks and m onths, may be ex pected to be i n si g Where such work i s goi ng on co n ti n u o u sl y , I s co n si d er i t w i se to remove th e oarbon i n such not to gi v e r i se t o d u st s. T hi s can be done on o i l ed su r f aces f rom w hi ch d u 3t w i l l not r i I shoul d r eg ar d t h i s as th e si m p l est p r ecau ti m easure. The reason t h i s p o i n t has n d eal t w i th I n any of our a r t i c l e s i s t h a t i t ar i sen as a p r ac t i c al m at t er . As you know, w stu d i ed garage m ethani cs who do a l l k i nds of en g i n es, w i thout f i n d i n g any ev i denoe of any l ead ab so r p ti o n . Even i n the most sev ere and ex posure to d u st f rom carbon I n m otors, the h not be g r eat , and one would n o t ex pect any d 0010-020 en t i r e w orki ng day , oases of poi soni ng w i l l n o even a f t e r months or y ears of ex posure. I th i n r eal i z e t h at h er e the hazard i s no t v ery g r eat I hav e w r i t t en Mr. s evan a l c al l i n g at t en t i o n to y our r ep o r t of Jul y l 6t h i n sp ecti o n of Sal nt-O uen r ef i n er y of Standard des P et r o l es, He w i l l undoubtedl y c a l l y our a t o my comments, b u t I may augment them by c al l at t en t i o n t o the f ac t t h at we ar e not w i l l i n g the use o f more than one group of men a t any o p l an t , si n c e to do t h i s i s to reduce the ex pos p l an t by p u r el y a r t i f i c i a l means. I n our p o i n no p l an t i s adequate i n si z e and cap ao i ty u n l e m ai ntai n i t s work w i thout ex ceedi ng the p er m i t of m i x i ng o p er at i o n s. IfVhere t h i s f requency i s you shoul d l ook i n t o the f a c i l i t i e s f o r m i x i ng w hat i s the m at t er and reconsnend the n ecessar y U sual l y , I b el i ev e, i t w i l l be f ound th at sto r f a c i l i t i e s are n o t adequate. . D r. M achle c a l l s my at t en t i o f ac t t h at you d i d n o t have copi es of two r ep r i ours w hich we f e l t you shoul d have i n y our o f f the i nf orm ati on of persons who m i ght r eq u est t T heref ore I am sendi ng you under sep ar at e cov e of " An A pprai sal of t h e L ead H azards A ssoci ate D i st r i b u t i o n and Use of G asol i ne C ontai ni ng T L ead. Par t I " , and h al f a dozen copi es o f our ''The O ccupati onal L ead Exposure of Men Engaged T etr aeth y l L ead w i th G asol i ne" * . V ery t r u l y y ou EA X jis Robert A.' K eho 0010021