Lewis - (}) - July 15, V)kG are cleaned while wet and in any event the practical danger of poisoning from this source would he very such less then that from organic lead in the sludge.

There can be no very serious doubt that the extent of the risk of poisoning from lead which has 'actually been absorbed Into the body, relates to the quantity absorbed and not to the nature of the compound to which the individual was exposed.

We have been able to demonstrate quite clearly that lead excretion within certain limits is compatible with complete safety, whereas at certain levels and above, the danger of lead poisoning begins and increases accord ing to the increase in lead exposure.

Lewis - (3) - July 15, 19^0 are cleaned while wet and in any event the practical danger of poisoning from this source would be very much less then that from organic lead in the sludge.

There can be no very serious doubt that the extent of the risk of poisoning from Tead which has actually been absorbed into the body, relates to the quantity absorbed and not to the nature of the compound to which the individual was exposed.

Our previous experience does not lead us to expect residual injury from the type of poisoning from which DeBernard .suffered, and in his case there is apparently every reason for believing from clifiical.evidence Si&fc1SgdhIS0?

Evidently he considers all individuals with urine leads of 0.2 mg lead per liter of urine as sick with lead poisoning, recardless of their clinical status and, therefore, deserving of therapy.

National Lead Co. .- National Lead Co.

Obviously there may be legal or other reasons for avoiding this course* but that Is our best reaction to the problem with which you are faced# Our previous experience does not lead us to expect residual injury from the type of poisoning from which DeBernard .suffered, and in his case there is apparently every reason for believing from clifiical.evidence ffi&fc1SgdhIS0?

We havre much lead poisoning among children in our older American cities, but we know why this occurs, and we could prevent it entirely within a year or two if we wdre to spend the effort (and money) required to accomplish this desirable purpose.

National Lead Co. -- National Lead Co.

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evidence of lead absorption even though they may at times develop evidence of carbon monoxide absorption* The interpretation of this in terms of the effects on pilots or passengers in airplanes is that there is no danger from the point of view of lead poisoning* It must be pointed out, however, that exposure to exhusfc .

This has beer, done for the reason that there no longer exist a distinction b-*tween certain classes of mcmbersr.i o', whreby one class has no particular interest in lead poisoning, so that the pro gran of medical research should, it seems, now be succorted by all norr.Ders.

sorption of lead.