Lead concentrations in the blood and urine of the order of magnitude described, are seen only in association with very severe lead exposure.

He will expect you to use pure lead-and-oil paint, such as that made of Dutch Boy pure white-lead and pure lin seed oil.

This was surprising since little or no lead was used for this batch; however, a high result from one sample is not too significant. 2.

The use of tin-covered sheet lead for containers is not new and, so far as my information goes, it has been accomplished successfully in a amber of instances.

Your article ''Exposure to Lead" v.3 (Feb.) 194-7, has prompted us to contact you.

AT AMERICAN LEAD W.

The subject of possible lead poisoning hazards to personnel engaged in the transportation of leaded gasoline on tank vessels seems to persist in spite of our efforts to show that no ill effects have been suffered by any one to date.

Lead-and- characteristics.

The lead and zinc ores from which Ozlo is derived reach Coffeyville as clean concentrates.

'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.

Perhaps I should explain that as the chief medical consultant of the Ethyl Gasoline Corporation* X have not only advised the Corporation in medleal matters but have also had the responsibility of investigating and reporting to the Dal ted States Public Health Service all cases of illness or complaints arising from the use of leaded gasoline* la carrying on such investigations over a period of years* w e have failed to find any evidence either of lead poisoning or leadab** sorption among men who work with leaded gasoline* therefore It seems rather improbable* after this period of time* that a case of lead poisoning should originate* Moreover I am fully aware of the fact that patients often misquote their .

icher Lead companies, decided to proceed and I think their decision is souna.

Philadelphia) (National Lead & Oil Company.

It is possible that a small amount of lead was lost in the process of removing the bismuth If so, this was purely the result of entrainement and the amount must have lean quite small In any case, such an amount of lead in the stool has no diagnostic significance since amounts up to 25 or 3 mgs. per sample are vittidn the normal limits.

I am quite in agree ment with yovt that undue emphasis has been placed upon the possibility of lead poisoning from the handling of leaded gasoline.