It Is quite apparent that the method we have used In this country to pur our precautionary measures into effect have been inadequate* I have a distinct feeling that there may be Inadequacies also outside of this country, and It gives me some anxiety to think that incidents of this sort may occur in connection with the cleaning of storage tanks in any part of the world* It seems quite co* tain that we shall have to set up seme mechanism for taking this activity under our own supervision* we are in the process of setting up a mechanism for this purpose In this country* At present I do not consider it advisable to try to extend such a mechanism beyond our own province and 1 shall not make any reoesamenda11ons on the subject until we have complete information as to the character and magnitude of the whole problem* As an illustration of what I mean* let me point out that all the cases of poisoning in this field have occurred in connection with tanks which have been used for mixing and which may, therefore, have eon* talned concentrated Fluid in the sludge at the bottom of the tank, as well as crystalline decomposition products of tetraethyl lead* -On the basis of the occurrence of eases we might assume that the danger Is confined to tanks that have been used for mixing as distinguished from tanks that have been used solely for the storage of finished leaded gasoline* I am by no means certain that this oonelusion H* E* A* Boldero -2 Is justified and until I am certain# I shall not wish to make any reoceamendatlons of widespread application.

The health hazard in the plant, as I see it, is almost exclusively a question of concentration of lead in the air in various places.

The items considered were, with the exception of the last, the same as mentioned to each of you and were as follows: On page 1 about half way down, a statement will be made that the total lead*liberated to the atmosphere will be the same with X-105A as with tetraethyl lead when gasolines are "doped" to the same lead level.

This was presented in part, such as, for example, the data and discussion and tetraethyl lead poisoning as a general industrial and hygienic problem,and the observations made on the metabolism of lead that prove "deleading," by the most commonly suggested means, to be an impossibility.

At the same time this is done, arrangements can be made to have lead analyses made in connection with your work.

During--the"''many years Ethyl Gasoline has been on the makt we have never had a single case of lead poisoning brought abouyiy association wit^^&^^^^Gasoline and we are naturally positive that |ifhe exposure f^f to No Nox Ethyl Gasoline did not brina^bout any s/^kness due to tetraethyl lead. __ We appreciate your calling this matter to our attention and we hope that you will continue to report any supposed cases of lead poisoning to us.

Of course, .his hands were covered with lead oxide, and to my amazement, the first- thing lie did when lie came down off the catwalk was to take an orange out of his lunch box which lie started to peel ami cat--probably .one of the most effective ways to get' lead poisoning

In addition, you should avoid contact with gasoline with great care regardless of whether or not it is gasoline containing lead.

ET HYLPORT - BU EN OS A IRES Buenos Aires,May 22nd1945 Dr<>Robert A,Kehoe, Kettering Laboratory of Applied Physiology, University of Cincinnati, Cincinnati - Ohio - USA-Dear Dr,,Kehoe, - I amvery much obliged to you for your letter of April 28th,, 1945 enclosing a very comprehensive memorandum on the hygienic requirements for the manufacture and transportation of lead tetraethyl and its highly concentrated mixtures,and for mixing 3uch materials with gasoline,.

We have used the preparation In adult cases of tetraethyl lead poisoning Without difficulty.

Roush his calculations showing that considerably less tetraethyl lead will evaporate from the Vitol solution than from gasoline.

One can certainly not take seriously the so-called evidence of this quality of tetraethyl lead.

Cotton Dust .20 Tetraethyl Lead .21 Tetramethyl Lead .22 Benzene 23.

Booth indicated that the case would never come to trial, and was related to tetraethyl lead only indirectly, as Mr.

One can certainly not take seriously the so-called evidence of this quality of tetraethyl lead.