Document Z4jqxZjN6a7kZ00VQ394vb180

June 1?, 19 54 M r. B. F . P en rose Eth yl An tikn ock, Ltd. 44 Kin g St r e e t W est Toronto I , Canada D e ar Ben : Th e sa m p le s o f u r in e fr o m t h e gr o u p o f e m p lo y e e s o f T or on t o Iro:n W orks h av e b e e n r e c e iv e d an d a n a ly se d , an d in t h e a b se n c e o f D o ct o r Sa:n d e r s, wh o w ill not retu rn un til the en d of the m onth , it se e m s ad visab le to rep ort the r e su l t s to y ou w it h ou t d e la y , I a l so se n d tw o c o p ie s o f t h e r e p o r :t , in c a se it is d e sir ab le to h ave th em a s eviden ce of m y statem en t, I am n ot su r e th at they n eed fo r m al reportin g to you o r to D octor Griffin , but if the lat t e r o b t ain e d th e sa m p le s fo r u s , a co p y of th e r e p o r t sh o u ld go to h km . You w ill know th is an d can be guided accor d in gly . A s th e in terp retation of th e r e p o r t in d icates, th ese r e su lt s a r e w ith in n orm al lim it s, an d alth ough an y one in dividu al in the grou p m ay h ave ha d som e sligh t r e ce n t e xp o su r e to le ad , w h ich d o e s n ot sh ow u p in t h ese r e su lt , ju st a s a m a t t e r o f ch an ce v a r ia t io n , t h e u n ifo r m it y o f t h e e igh t r e su l t s mla y b e st b e r e gar d e d a s evid en ce th at the grou p &a a w hole took ap p r o p r iat e p r ecau tion s and th ereby avoided an y sign ifican t lead ab sorp tion . W ith k in d e st p e r so n a l r e g a r d s, Sin cerely y o u r s, . .- . - . : RAK ef " ' ' '"' C . C . : D r , L. W. San d er s Enc. R o b e r t A . Ke h o e , Mu P . , . .. . - KE 0017320 / Source Employees of the Toronto Iron Works who were engaged in a tank cleaning repair operation Material: Urine Submitted : 6 - 4 - 5 ^ b y D r . L . W. Sa n d e r s f o r Mr1:. Ben P . P e n r o se , / E t h y l A n tik n ock , L t d ., 44 Kin g St r e e t W est, Toronto 1, Canada Required : Lead Analyses Name Analysis Number 5 4 A-4329 54A- 4330 54A-4331 54A- 4332 54a -4333 54A-4334 54A-4335 54A-4 336 Volume ml. 128 139 145 108 116 143 161 112 URINE Spec i f i c Grav: 1 .0 23 I .030 1.0 27 1.0 29 I.O23 1 .0 25 I.O27 1 .0 28 Mg. Pb/ Liter 0.04 0 .0 5 0.05 0.04 0.04 0.04 0.04 0.06 Samples Collected Samples Received: Samples Reported. 5- 31-54 6-4- 54 6- 15 - 5 4 Th ese an aly tical r e su lt s give no eviden ce of an y recen t occu pation al exp o su re to, o r ab so r p tio n of, le ad in an y r e ce n t p e r io d . Sign ed s-j R o b e r t A . K e h o , M .1 D .