Document dYBkoENj2mjJg50ZQ4N3mZ4pb

29 May 1956 Mr* J, T. Beckwith Ethyl Corporation 100 Park Avenue New York 17, New York . j j J Dear Jin: I am enclosing a copy of a letter to haeDill Air Force Base which closes our file on the thrie men who were reported to have absorbed load frcik their work in the knock-testing laboratory. j Your office should have been on the list for a copy of this letter originally, but through j oversight was not included, ' j Very truly yours, j LWSjvr Enel. Lester W. Sanders, M.D, K Z 0017340 3 hay 1956 las FrovontIve medicine Inspector TacDill Air Force Base . Tasipa Bt Florida Dear Sir: The analytical results on the blood and urine or losers, limber, Zilc .and Lorcr are enclosed. These results are cone what loner than the mean cone enirat ion of load In biobd and urine, respectively', found in people with no exposure to load other than that encountered In food and atmosphere. It la certain evidence that there has boon no recent industrial exposure to load of any hind. I was Informed by telephone that urinary carroles on chene men had been reported as sero for load at the same time that blood lovela ranged to over. 90 mlcroptPEins por 100 yrarris. This bind of relationship between the load concentration, in blood and in urine Is paradoxical and on both the yrouud.a of theory and thousands of analytical results, would he :out unli'ccly if not impossible. Those results, then, particularly in view of the fact that the subjects v/oro clinically v/oXX arid asymptomatic should have boon discarded or at least % lowed with oxtron suspicion. In apito of tho roport of a defective hood bo inf; In uno in tho laboratory, no fool ontirely confident that thoso non havo not been absorbing load and there Is no rear on for removing then from tho job. Very truly yours, L'SSjvr 1 ,, i'm-GJL. v cc - Dr. H. A. Kohoo Gol. John Boysen ' ':r. John Curry t,-ester W. Sanders, f.T) K E 0017341