Approval No. 2139)* This is approved by the Bureau of Mines fo r lead fume and a l l other fumes th a t are no more toxic than lead.

Quality Seal Other Lead Free and Leaded 460,350 Lbs. 31.100 Lbs. 1.853.300 Lbs. 1.744,750 Lbs.

Kehoe's views on the question as to whether he has known of any case of tetra ethyl lead poisoning (or of lead encephalopathy from inorganic lead) where the mental symptoms have been permanent.

Quality Seal Other Lead Free and Leaded 460,350 Lbs. 31.100 Lbs. 1.853.300 Lbs. 1,744,750 Lbs.

The lead content of spinal fluid is always quite low under even the most extreme conditions of exposure, and It has not been established adequately that the concentration of lead in the spinal fluid shov/s any relationship to the lead content of the brain or the other tissues.

I refer to the latter mechanism as questionable beoause I have never been able to find any adequate evidence that lead absorption and lead intoxication produce vascular disease.

American Smelting & Refining Co. fiecla Mining Company National Lead Company National Lead Company St.

Munn who was using sheet lead as a decorative medium.

Munn who was using sheet lead as a decorative medium.

As a consequence of these facts, the lead which we found in these two samples nay be of very little importance.

Substances acting as feta l poisons: Examples: Lead, mercury. 8.

As a matter of fact, tetraethyl lead itself is not a skin irritant, and we have not able to establish any evidence of sensitivity phehomenSSi in connection with tetraethyl lead.

One aspect of it requires as careful correlation as can be made between the operation of the lead plants and the data relating to the lead exposure and lead excretion of the worker.

COMMENT HANDLE Draft Reply Note; Ret'n LEAD HYGIENE AND SAFETY BULLETIN NO. 31 To Members of the Lead Industries Association: As an illustration of how wide of the mark press reports about lead poisoning are frequently found to be, please note the attached copy of an article which appeared in the October, 1942, issue of SAFETY EDUCATION magazine, published by the National Safety Council, entitled, "LEAD TOYS-- LEAD PAINT-- LEAD POISONING."

Chap ter- on "Lead absorption and lead intoxication versus tuberculosis" by Elston L.