Whitson has been elected a vice president of National Lead Company.

The challenge aerosols contained predominantly lead dust and or lead fume.

These findings are within the limits for normal individuals and can not be regarded as Indicative of a recent significant exposure to lead compounds.

As it happens. 1. have spent the greater part of my professional and: scientific life in the investigation of lead poisoning, and perhaps more, specifically, in the study of the physio logical arid pathological behavior of lead in the -.animal organism Including 'man, with some special attention to some of the organic compounds of load, principally tetx'aethyl lead.

In m y letter of June 1 J to you, I asked whether the blood lead-levels were followed in the cancer patients who were treated with colloidal lead preparations and on whom studies dealing with lead exoretion were made and published in J.

The symptoms, pathology and sources of ,,Flifnbismw or lead poisoning of farm animals are presented in a very 7YH=?

All products that do not comply with the January 1, 1973 ruling of .5$ lead will be removed from the Buyer's Guide July 1, 1972.

Lead Industries Association, Inc.

PUREST COMMERCIAL WHITE LEAD MADE--YET COSTS NO MORE 39272.

Modern gasolines are sufficiently different in their susceptibility to the addition of lead, from those of the late twenties and early thirties, that a much higher concentration than 3 mi. of tetraethyl lead per gallon could be employed to advantage.

Analysis No. l|OA-OS37 Organic lead % Organic lead 8.5 mgs/lO gms sludge O.O85 Inorganic lead % Inorganic lead 150 mgs/10 gms sludge 1.5 Volatile lead (air passed over sludge) Mgs lead found - 0.60 per 12 liters 0.05 mgs/liter 500.0 mgs/lO cu M air Samples Received: March k, 19I4.O Samples Reported: May 9> 19^-0 K E" 0021061 N 24471.01

The highest grade red-lead obtainable is Dutch Boy redlead.

The individual operating the vacuum transferring apparatus and transferring lead was exposed to excessively high concentrations of lead during the period of transfer.

COVER ONE SUBJECT ONLY IN EACH LETTER YOUR LETTER OF SUBJECT: SALE OF LEAD PAINT TO Mr.

'Pith the blower not oporatino, I oxs only able to bind 6 ups. of lead In this particular tank. ill of tile woulu s.pu to indicate tnat with proper air movement xn tease tanks chat there is no hazard from lead in tne air.