Document MGwVe4Y7y107MVQkdNE4b90Jz

of California. Reorder No. 912-5/3 PARK BRAND FOLDER MEDIUM HEAVY W EIG HT Tf as *"- i r- HE 001844 Bai' Br. Prince: I am sending you herewith, analytical reports on the sam of blood and urine from the group of men referred to in letter of September 18- A bit of interpretation may we useful to you in connection with these results. First say that there is somewhat more innate variation in res obtained on small samples of urine than would be the ca we had dealt with samples of large volumes*Actually we that the variation in the. rate of water excretion is an factor in the lead concentration. Consequently spot sa obtained from normal individuals range from O.ul to 0.1 per liter. This makes It a little difficult to differe normal from abnormal samples. It is for this reason th make use of blood samples in conjunction with spot urin samples, for the variability of the blood samples is co ably less, the normal range extending from o.ol to o.u5 per luQ grams. With these points in mind you will see of these individuals show some evidence of occupational absorption, although in the case of Todtman the values blood anc^ir^ie are within substantially normal limits. case o f g f l H B . the blood v a ^ ^ ^ y t o r m a ^ ^ j u t t h ^ m ^ i a is just <aiittle elevated and f l H H H P g i evidence of elevated lead co; their blood, the urinary values are within normal limits . The meaning of these data taken together seem to me to clear. These men are having some slight, and probably mittent lead exposure in connection with their work, hu order of severity of this exposure has been so slight d recent months that it cannot be regarded as actually ha Certainly It I3 not to be anticipated that men excretin these quantities would be likely to develop lead intoxi Our experience with lead burners in recent years has de strated that they may be exposed to hazardous amounts o This is particularly true when they work continuously a and maintenance jobs. On the other hand, If their expo intermittent, or if the jobs performed vary considerabl severity, lead poisoning Is ^are in i ts occurrence. If the jobs are conducted with care against exposure, pois be avoided completely. KB 0018448 Very truly yoursy 4 ' u n i Viras ^.rv-' v i r i n o ;r,;c y a l o n a z n r i a i ; 'S in .vSfe VySi -5I in': .' i : ;Y . 1 - tO'.. >- -, -- X-.- < q !-'rTS,--i'fC; rVft'XrPhipyi n i 1.Upi- ' 14 Robert A .-eh.be, K. D , h h ,an i. oaqi'idx a~,; m RAK ef 'J - - .. Enc -V' ' ; t-4 :yky " ;l \: -ix .i .v-u, - . -j.-i n a >:; ,-r .;; r Y - h ; , - ir>.j . `S ... . ' - hx.x:Az ni.. a '.V !.. : 'm i Va si i vr. r ; .; ; X '. , ,U , Hi:: a.1 . , , . :. .. .w : . . . - > x ; k j x ijiyia-r iy v .i r . .3 5.tiniI''l:nc*rinvilii n> 'a-..,. >- .prr n, : .V . - i- CzSr&'iiy V'Y^,- ' : ^'1'/. ' va h u a : ; ..; ?. - ' r,,.i y i Y VY y . q i y i a lia r - i-:n i . a'.i - : , M Y-L -X-. -3 i V y n ^ li - .*a' -.i 'iii-j . u ; . . r'-,n :in-ini i i '.v h -- - - ' Yv.--v_. j x,,..xnVH J - - -i 'U` J o S a i i . ) ' - i l ' crii' r,:-i arr . i S f t S i . Si eri i? i J . r t s !q . f , i i k l i i 'iia ti J- ,-.v -'an- :*ZQ->. ,.iX .fci. i i : c i - x i . r i' v im y ii r r iiirVciMp : *. i "--rf S J- .. ; * ? .- -i ,r* n i ,li. s j ' i j n s - ' i c i q r . i-Byl n'iiii'.ursr; c s q .x ' ryj'i.rnVfti - i v b ' t x s . - . .; O w u C O X i ~r'i .iq .' , jV.'~ ' r ~ r f,--V V-<- - ' HI. iJ .. ...irli i-'=. ..> ' V, \J-.. _/ -, m .. r > ; f I..' nr-. ) ' n n ! . - v HHV ii - -.\i -X; ,:r: -iiViy , , . t .;.c X - i \ m a a i t , .. V!> ' - ^-- : - - : - ; ; - 3 . ini v y ! ' - i \ J . ; C ; q r 3 : .y , .--U q >r; 4 * .'': r>r r r r r r- . v '. O ;i . : xX: : s' /.! i . ; KE 001844!)