Recovery occurred in bo indeed it may be said that no permanent seq seen in relation to tetraethyl lead intoxica hand air.

The 1353 com i (Ahhoi-h moil gao|lrxs now con mittee said it was "regrettable* PUS tain it, adding tetraethyl lead it not had r*A done to.

v . .Memorandum' -cjn;an' Experimental Study of the Metabolism of Tetraethyl Lead in one Human Body (Kehoe, dov.

This, I am sure, is because actual lead absorption has been reduced practically to the vanishing point in men engaged In this work, I am sure that this will be the case everywhere if the work is don properly* You will note that the initial symptoms of significant exposure to tetraethyl lead differ quite appreciably from the customary clinical picture of lead absorption.

We have had several thousand men under our care in this country for years without having had a single case of lead poisoning* This, I am sure, is because actual lead absorption has been reduced practically to the vanishing point in men engaged In this xtork, I am sure that this will be the case everywhere if tho work la done properly* Tou will note that the Initial symptoms of significant exposure to tetraethyl lead differ quite appreciably from the customary clinical picture of lead absorption* On the other hand, there is every reason to believe that prolonged slight exposure would result in the usual clinical manifestations of chronic lead poisoning* Accordingly wo make It a practice to examine every man carefully with reference to suggestive acute symptoms, as well as the blood and other clinical evidences of chronic lead absorption* Our studies on the lead excretion of men In this work have demonstrated that there occupational load absorption is insignificant if the conditions of their work are as they should be.

F o r practical purposes, and for use in cleaning generally ,the lead concentration in clear gasoline which has never been treated with tetraethyl lead, is an item of no importance.

We have had several thousand men under our care in this country for years without having had a single case of lead poisoning* This, I am sure, is because actual lead absorption has been reduced practically to the vanishing point in men engaged In this xtork, I am sure that this will be the case everywhere if tho work la done properly* Tou will note that the Initial symptoms of significant exposure to tetraethyl lead differ quite appreciably from the customary clinical picture of lead absorption* On the other hand, there is every reason to believe that prolonged slight exposure would result in the usual clinical manifestations of chronic lead poisoning* Accordingly wo make It a practice to examine every man carefully with reference to suggestive acute symptoms, as well as the blood and other clinical evidences of chronic lead absorption* Our studies on the lead excretion of men In this work have demonstrated that there occupational load absorption is insignificant if the conditions of their work are as they should be.

Under certain conditions it appears,that these triethyl lead compounds wvithin the sludge, (not that in the adherent scale), may be reconverte^into tetraethyl lead.

It is not to be reprinted or published, in whole or in part, without consent of the Director of The Kettering Laboratory, 'n ,2- The following observations make up part of a general program for the study of the potential hazards associated mth the distribution and use of motor fuels containing tetraethyl lead.

Of course, his hands were covered with lead oxide, and to nay amazement, the first thing he did when he came down from the carwaik was to take from his lunch box an orange which be started to peei and eat. probably one of the most effective ways to get lead poisoning.

After long standing In storage tanks, fcetraethyl lead in commercial concentration in gasoline may undergo partial decomposition, with the formation of a variety of compounds, such as triethyl lead bromide or hydroxide and diethyl lead salts.

This discrepancy between the blood and the urinary results is characteristic of tetraethyl load poisoning.

Tetraethyl Lead. " The other article is much more extensive, but specific attention should be called to the extreme skin exposure of the m e n enga g e d in f i l l i n g b a r rels.

A large number of conditions, such as the above, would have to be net, particularly the ones specifying complete absence cf ventilation and full day's exposure under identical conditions, and probably more importantly, a rate of volatilization of organic lead from the sludge sufficiently rapid to effect saturation in the tine allotted, fhis would occur probably only if the organic compounds were pure tetraethyl lead and they did not undergo any decomposition in the period of standing, in line with this, it would be advantageous to know the rate of evaporation of organic lead from sludge and the influence of ventilation on this.

tank of one of your company's anes are available, and it seems best that these reports bo forwarded to you for appropriate handing* 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 those samples 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 duet, containing such a concentration of lead were to be suspended in the atmosphere it could give rise to come hazard under conditions of prolonged exposure, but the risk of lead exposure fpom this source is certainly not very great* It appears that seme of your company*s employees have been apprehensive about their exposure to lead* #- KE n - \J V/ \) 1,!