My associates and I, over a period of years, have made ourselves available, in connection with our responsibilities to Ethyl Corporation, as well as our agreement with the United States Public Health Service, to investigate carefully any and all lead exposures or alleged lead exposures associated with the handling of tetraetliyl lead and leaded gasoline.

Page 40 - Consignment Stocks of leaded -Cine Oxide; liinsty thousand pounds of leaded zinc oxide were consigned to C.

It is felt, however, that in 1947 there will be available for the United States lead requirements approximately 200,000 tons more than the 832,000 tons of available supply in 1946, which was composed of about 332,000 tons of domestic mine produc tion, 360,000 tons of secondary lead production and 140,000 tons of imported lead in the form of both ore and metal.

Paul Mahnken a few days ago for lead determination.

Siebert: I have been checking the records in the lead cases which we have tried and also the reports of the courts of last resort throughout the country on lead appeals, and find that the latter, at least, are rather unanimously in support of your view that the best laboratory for lead tests is Kehoe.

It would appear that when leaded gasoline that contains 3 co of lead is used measurable amounts of lead are found in the flue gases, but that the greater proportion of this oomes over in the first 30 minutes while the stove is coming to temperature, and we have further found that the lead which passes the filter in the early minutes of running is in the form of tetraethyl lead.

In this connection you might be Interested in the clinical description of tetraethyl lead poisoning, and you might also be Interested in the behavior of tetraethyl lead in the animal organism and In the distribution of such lead in the tissues.

What ever may happen in the vicinity of am individual which leads to lead exposure will be demonstrated in terms of lead absorption.

Kone..;;)* of these men, nor any other persons whom we have ever found, have ever given us reason to believe that lead can be absorbed out of commercial leaded gasoline as the result of skin content.

The concentrations of organic lead mere low in both instances and it is worth noting that the absolute amounts of organic lead in the scale were less than 0.2 mg. in the entire ICO sc. feet of surface and about 1.3 mg. from the entire IOC sa. feet of bottom plate.

For your information I should like to point out that there has never been a case of lead poisoning in this occupation# and that the persons engaged in it do not show any even slight increase in their level of lead excretion as evidence of lead absorption.

What ever may happen in the vicinity of an individual which leads to lead exposure will be demonstrated in terms of lead absorption.

NATIONAL LEAD COMPANY lit Broadway, New York; 116 Oak Si..

Pb/100 Grams - O.O7 (Dithizone) Uhe lead concentration -in the fclcod is at the intermediate lev;el denot ing lead absorption vhich may .dr may. .not 'be associated virh symptomatology, ihe "urinary .lead: concentration is. at' the up_ er normal, -ie.vel'-, vhich. suggests that -the lead exposure may be on ine sal's side

The concentrations of organic lead mere lot?