The analytical figures that you give indicate that washing and aeration will effectively reduce the amount of lead vapor in t-he air, hut ore always has to consider the possible liberation or exposure to tetraethyl lead or its products 'when work, is actually begun.

They oorae to us from manu facturers of stoves who State that they have been requested by some one in the Quartermaster Corps to develop this, that or the other device for burning leaded gasoline* A recant inquiry from the Jiltrol Company stated that Camp Holabird was about to begin experiments on the use of activated olay for removing lead from gasoline.

The analytical figures that you give indicate that washing and aeration will effectively reduce the amount of lead vapor in t-he air, but or*8 always has to consider the possible liberation or exposure to tetraethyl lead or its products 'when work, is actually begun.

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

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,.

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

.- ETHYLPORT- BUENOS AIRES Buenos Aires,May 22nd,1945 Dr<>Robert A,,Kehoe, Kettering Laboratory of Applied Physiology, University of Cincinnati, Cincinnati - Ohio - USA,-* Dear Dr,,Kehoe, I am very 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.

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

If we can prevent the decomposition of tetraethyl lead in the Fluid to a sufficient extent, these tanks will not require cleaning.

This, as you will recognize, Is not true of tetraethyl lead, but that is quite another matter.

A further danger exists from the inorganic lead compounds in the water bottoms and sludge resulting from treating operations other than tetraethyl lead, It is envious, therefor, that, no stowage tank used for leaded gasoline may be assumed to be free from a lead hazard, even though It is free of gasoline vapor as determined by a com bustible gas indicator. 3.

/ S^'\ W" >') ' We have already received the two sm&ll cans\ of tetraethyl lead and have proceeded with our experi ments.

Taylor addr ess New York subj ec t Changes in the Regulations for the Sale and Distribution of Gasoline Containing Tetraethyl Lead as Approved from Time to Time up to June, 1946 dat e June 11, 1946 In accordance with your letter of May 9, we have checked the draft of your proposed regulations.