"lead boie tubttonce1' ai any paint, plaster or other surface ~ material or substance containing mote than .9% lead by weight, calculated as lead moral in the total non-volatile contant on or before Jorxmry 1, 1974, or mare than .06% lead by weight, calcu lated as lead metal, in tfie total non-volotile content after January 1,1974. b.

This, of course, does not refer to lead absorption, but to establishing the diagnosis of lead poisoning.

If one could 2 G maintain a high rate of lead loss from the body, assuming that the <d o lead complex so created vas essentially non-toxic, one could speed .G up the loss of lead from the body very much indeed,and certainly *G 4J G shorten the period of potential risk in relation to further lead CD exposure to i.

The reasons for the uperiority of the latter procedure arise from 1) the relation of the lead in the blood to the "effective body burden of lead," and 2) to the fact that the oncentration of lead in the blood varies primarily with the amount of lead in tiie body and not to a wide range of physiological variability.

Machle Section II - Storage & Transportation of Leaded Gasolins Relative toxity of organic and inorganic lead.

A Hoy* fh distribution of Lead ia the poisoned Ani&al A* 8 Minot

Just radar 50,000 copies of ase sent to users sad potential users of lead.

Back in the late thirties, Ethyl Corporation became interested in lead alkyls that would have greater volatility than tetraethyl lead, for technical reasons, among which was a desire for a more even distribution of the lead compound among the cylinders of internal combustion engines.

If one could & GrV\i-)' maintain a high rate of lead loss from the body, assuming that the O 0 lead complex so created vas essentially non-toxic, one could speed tdi .G up the loss of lead from the body very much indeed,and certainly *ci G shorten the period of potential risk in relation to further lead q ; exposure CO cj O In this connection I have had an exchange of correspondence vith Doctor J.

.-. o*e for lead.

This, of course, is elementary, for there is no necessity of swallowing lead, and every provision should be made to facilitate the avoidance of swallowing lead.

An investigation to find lead in the blood was unfortunately a failure.

Kehoe O w methods for the determination of lead in biological material.

LEAD tNDUST*IES A J iN ., INC.

Haohle Section II - Storage & Transportation of Leaded Gasolins Relative toxity of organic and inorganic lead.