The father is free of lead as far as we can tell.

If lead ingestion continues, acute fuminant lead encephalopathy can occur.

The father is free of lead as far as we can tell.

The respective titles are "Comparative Exchange of Calcium Lead and Radioactive Lead in Dogs" and "Migration of Inorganic Salts in Bone as Measured by Radioactive Lead and by Alizarin."

"Lead."

A chemi cal change takes place and converts the lead acetate into basic lead carbonate, or, as we call it, white lead.

However body burden of lead must not be confused with the actual health effects of lead in the body or the concentration of lead in blood.

Te are continuously accumulating a large amount of useful data regarding lead and lead products to be made the basis for later educational and publicity effort*, Sc:./ of the lead industries have been receiving much und eir-ble and unwarranted publicity regarding lead poisoning, Te are investigating this serious problem with a view to counteracting thi* type of publicity.

There is enough evidence to implicate lead in gasoline as a major contributory source of lead for children.

' Pb in Urine Mgs/hiter 0.08 0.08 0. 05 0.09 0. 05 ; 0.07 The above figures do not demonstrate the occurrence of significant lead absorption taking Into account the information now available on the wholo subject of lead exposure in relation to leaded gasoline* together with the foregoing observations* which are admittedly meager* I am convinced that the use of lead in aviation field up to ce* per gallon will not be attended by an increased hazard to any group of individuals* Vary truly yours, UK jig Robert A* Kehoe, K E 0009231

-White Lead White Lead Department, last Chieago, Ind.

BacGregor Coapsny latlonal Lead Conpany St.

One thing has become quibo clear, in these studies, namely, that even slight changes in lead absorption are accompanied 2 Dr* B* C# Fisohbein by corresponding changea in tho transportation and excretion of lead, therefore we can use lead trans portation and excretion as an adequate measure of the magnitude of exposure* if observations are made in close tine relations hi p to tho exposure# Now in the case of tetraethyl lead in gasoline vse find that exposure to high concentrations of lead in the gasoline either by way of akin contact or by inhalation results in lead absorption# However when the dilution is sufficiently 1cm (1 part of tetra ethyl lead to 1000 parts of gasoline) there is no evidence that absorption occurs von after intensive and prolonged exposure.

Despite these regulations, it is a matter of observation that leaded gasoline has been used fog a variety of purposes and there has yet to be seen a case Of lead poisoning or of demonstrable lead absorption as a consequence of these mls-uses of the gasoline.

Subject: The effect of increases in the amount of lead used in gasoline production on blood lead levels in children, specifically how many more children would have lead levels 30 ug/dl.