Further, we will make every effort to instruct our new interns in the proper^collection of lead levels.

Accordingly, the concentration of lead in the blood remains low - often essentially unchanged - in tetraethyllead poisoning - evep fatal intoxication - although the lead in the urine is often remarkably high.

I quite agree with you, in view of the information which you have given me, that contamination of most of California wine with lead from the capsules does not occur.

I then calculated the actual quantities of lead absorbed per day in accordance with the postulations in the table attached to my statement, and came out with the figure of 2.14 micrograms when the calculation was based upon the lead retained in the respiratory tract during respiration, and as 3.09 micrograms when calculated on the basis of that inhaled {rather than that retained).

***i mmaii iPPWPiPBWPlfWFiPffWP'WWf LIA14162 a LEAD INDUSTRIES ASSOCIATION, PTC, ____________________ BALANCE SHEET.

A subsidiary of National Lead Company.

Of special interest among the findings of this 16-country study is that the average lead levels in the blood of New Guinea aborigines, who lived away jfrom industrialization and motorization, were comparable with those of persons living in industrialized countries.

ONCOR PIGMENTS National Lead Pigments and Chemicals Div.

Radtke of the International Lead Zinc Research Organization, to attend the annual sessions of our combined research committees which will be held at the Drake Hotel starting at 10:00 a.m. on Tuesday April 27- Don Diggs of DuPont will be talking'to this session on the general subject of air pollution as it affects the lead industry.

t LEAD INDUSTRIES ASSOCIATION, INC ** HADIION AVINUI !

Kehoe: It has been recommended to me that I write you for definitive information regarding toxic levels of lead in blood and urine.

As I suggested to you in an earlier letter, the answer to this is net the elimination of lead-containing glazes.

In addition to the use of thl* aftterlftl la our Le*d laforoatlon Prograu* we plan to tend out cople* of the article on request whenever a general question about lead batard cootrol la Industry le asked us.

Kehoe, I enclose a copy of an article by Miss Cremer of the Medical Research Council relating to the toxicity of Tetramethyl Lead which appeared in the British Journal of Industrial Medicine.

Enel. - A Study of the Toxicity of Lead Tetra Ethyl by W.