3 on of lead i s used aoiiurablo mounts of lead are found in the flue $9*9,- but that the treater proportion of this ao t .e s over in the first 30 minutes while the stove is cosing to temperature, m & we have further found that the lead which, passes the filter In the early minutes of running i s i n the f o rm of tetraethyl lead.

LIA20314 LEAD INDUSTRIES ASSOCIATION HCW TOM IT.

LIA20314 LEAD INDUSTRIES ASSOCIATION HCW TOM IT.

Dr, Machle calls my attention to the fact that you did not have copies of two reprints of ours which we felt you should have in your office for the information of persons who might request them* Therefore I am sending you under separate cover two copies of "An Appraisal of the Lead Hazards Associated with the Distribution and Use of Gasoline Containing Tetraethyl Lead, Part I", and half a dozen copies of our study on "The Occupational Lead Exposure of Men Engaged in Mixing Tetraethyl Lead with Gasoline", Very truly yours.

A c t u ^ 3 ^ : the only danger `which is thought of b y us in:connection^with tetraethyl lead in gasoline Is that of{;the possibility of .lead?

Observation of the plants dis cussed herein shows that there are avoidable exposures to significant quantities of tetraethyl lead, most of the exposure consisting of the possibility of inhalation of tetraethyl lead vapor.

Variations in the concentration of lead in the blood of humans exposed to and removed from industrial exposure to tetraethyl lead. 5.

Variations in the concentration of lead in the blood of humans exposed to and removed from industrial exposure to tetraethyl lead. 5.

Please advise me if it is possible to obtain this amount of tetraethyl lead.

in gasoline, the Service's opinions were sought by industry, because both Tetramethyl lead and Tetraethyl lead are known to be potentially toxic (substances).

This is not true of tetraethyl lead vapor in the absence of other organic vapors.

July 19, 1940 Mr* Hugh Fossett The Associated Ethyl Company Ltd* The Adelphi London, W* C, 2 England Dear Mr* Fossetfcs Quit some time ago I received your letter with respect to the request of the Distillers Company for a supply of tetraethyl lead for carrying on some work, tha nature' of which is not disclosed'* As a matter of principle, I can see no objection to supplying tetraethyl lead to competent technical people who will make proper use of it under adequate conditions of safety* It is quite clear that if they are not able to obtain it from on source, they will from another* There is, therefor, no reason why your company should not supply such material for legitimate use.

acute illness was the result of absorption of tetraethyl lead and certain of its decomposition products.

Wo such changes occur even in fatal tetraethyl lead intoxication.

For reasons which I siiall not go into in this communication, the most useful Information In connection wit h potential exposure to tetraethyl lead, is the examination of the urine.