Document oXZ0vEvRNYyj5RDJkL592DL7

\ vm zm c^w im MEDICAL EXAMINER'S CFFICE . Ave. & 12th. St. Altoona,* Penna. ' November 23, 1951 Frank P rin c i, D* University of C incinnatti Kettering laboratories . gear Dr. P rin c i: Thank you fo r your l e t t e r o f November 20, 1951. My apologies f o r having misinformed you. The re p o rts re fe rre d to were misplaced but have bem found. I also note thsit a t the tim e these samples were sub m itted, I a ls o subm itted samples from th e se same in d iv id u als to our la b o ra to rie s and to Dr. Hamlin. I am sending th ese comparative r e s u lts f o r your study. You might lik e to comment. May I , in th e n ear fu tu re , submit some o th e r bloods fo r comparative stu d ies. I f e e l th a t by t h i s exchange of inform ation can we m aintain a f a i r l y s a tis fa c to ry check on our lab o ra to ry and findings. AGC/mb A tt: Sincerely yours, Medical Examiner tv* KE 0020312 N20709 Comparative Blood A nalysis for Lead Concentration Sampled 11-14-50 Gamma lead per 100 grams o f whole blood American Brake University of Cincinnati P.R.R. Shoe Co. College of Medicine Gamma Gamma Gamma Polarograph Polarograph Spectrograph Dithizooe Method Method Method Method 84 72 67 60 40 95 88 96 85 65 40 . 60 40 40 55 55 Urine Samples, P. R. R. only, m illigram s o f lead per 1000 c . c. 0.48 - 11-14-50 0.38 - 11/14/50 0.06 - 11-14-50 0.15 - 11-14-50 0.04 - 11-24-50 0.13 - 12-7-50 0.05 - 12-7-50 0.05 - 11-20-50 HE 0020313 N20709.01