I know nothing of the status of these, men with respect to their clinical condition or the nature or duration of their employment - However, it Is apparent from these results alone that no one of these men bar had any slgnific&Bt occupational exposure to lead* All of the results are within normal limits, being just like results that would be obtained if one. caxrled out analyses on the correspondlag materials from random individuals in the normal population of and professional people* I have a copy of Doctor .Kitmalllor* letter of November 29, and 2 wish to confirm his statement that I am heartily In favor of a comprehensive investigation of the status of your employees with respect- to occupational hazards* As Doctor- Kitsmiller lias stated, I expect to be in Miami during the Christmas period, a M if It is possible and is desirable on your part 1 should be very happy to discuss vlth you tho aocosaary details of %our work In tills . connection* If there are any specific matters that I should be prepared to discuss vith you, X should be glad to know of them at your convenience* I have just noticed that copies of the analytical reports of the material obtained from a wing tank of one of your company** jlano are available, and it seems best that these reports be forwarde& to you for appropriate handling* A notation has come to me today through one of the representatives of Ethyl Corporation that Mr* Morris of your company has been inquiring about these results and no doubt he will wish to be informed about them* It will be noted that the lead content of these samplo* is quite low* The concentration of tetraethyl lead is negligible while the total lead content as represented by that "extractable by acid** is so low as to have little significance from the point of view of hazard* Undoubtedly if a large quantity of scale and dust, containing such a concentration of lead were to be suspended in the atmosphere it could give rise to some hazard under conditions of prolonged exposure, but the risk of lead exposure from this source is certainly not very great* It appears that seme of your company*s employees have been apprehensive about their exposure to lead* K E nip'; Ut> #- KJ V/ U O Dr* Howard K.

The mixing of anti-knock compounds is an integral part of manufacturing operations for tetraethyl lead# and un doubtedly# this will be the case throughout the entire period of the war.

Ihis would occur probably only if the organic compounds were pure tetraethyl lead and they did net undergo any decomposition in the period of standing.

The exposure of persons to leaded gasoline is no^/occupational hazard, and under the conditions of its handling,the absorption of tetraethyl lead through the skin cannot occur to an appreciable degree.

Boulton Earnshaw of the University of Pennsylvania for tetraethyl lead to be used in experimental vrork.

Fishbeln: I am sending you herewith an article v/hich contains the results of several years experi mentation with tetraethyl lead.

Kehoe University of Cincinnati Use Kettering Laboratory College of Medicine Eden Avenue Cincinnati, 19, Ohio Dear Bob: I have your letter of February 19th on stabilization of tetraethyl lead to oxygen.

Add 3 cc tetraethyl lead per gallon.

Research Laboratories 1600 West Sight Mile Road Perndale 20 Detroit, Michigan Dear Doctor Beatty: Thanks for sending Doctor Kehoe two copies of "The Importance of High Octane Gasoline and the LT3e of Tetraethyl Lead in Its manufacture.

Add 3 cc tetraethyl lead per gallon. 0020700

Dear Calr I have a request .for a small quantity of tetraethyl lead for the purposes of pharmacological r*esearch, from one of the laboratories of "the Chemical Warfare Service.

Lewis - Jones New York Request for sample of Tetraethyl Lead - Ssn Jose, Cal.

C 0 P I 15 May 1943 Ethyl Corporation Chicago, Illinois Dear Sirs* We need a small sample of lead tetraethyl for our laboratory experiments and analysis.

Research Laboratories 1600 West Sight Mile Road Perndale 20 Detroit, Michigan Dear Doctor Beatty: Thanks for sending Doctor Kehoe two copies of "The Importance of High Octane Gasoline and the LT3e of Tetraethyl Lead in Its manufacture Doctor Kehoe will be out of town until September 1 at which time he will send 7/ou any comments on the report he may have.

Kehoe University of Cincinnati College of Medicine Cincinnati,Ohio Dear Dr, Kehoe Thank you for your instructive letter on tetraethyl lead.