Kehoa would give him the information desired and send him some reprints of articles on toxicity of lead.

N13377 I BASIS OF NEW INDUSTRY--Leaded zinc oxide, residue recovered from the "bashouse" atj * I Anaconda Copper Minin* Co

INDUSTRIAL LEAD POISONING Due to widespread lack of knowledge in the medical profession of the causes and diagnosis of lead poison ing, as well as the fact that it is not a reportable disease and the factor of deliberate -"covering up,u no useful estimate of its prevalence in the adult population is possible.

He died August 23rd,1935 f coronary thrombosis and was found at necropsy to have general blood vessel disease which because of his previous illness, was regarded by the pathologist as secondary to lead absorption and lead poisoning.

NATIONAL LEAD COMPANY r.

^S, JUH LEAD INDUSTRIES ASSOCIATION o NEW YORK 17, H.

Indeed, it seems in some patients we were able to maintain blood lead con entration at a subnormal level.

It is this small lead content in our Good Gulf Gasoline that feis anxious to get an. expression era.

Lead a n a l y s i s : Mr s .

significant excretion of lead has been found.

' y Tha manufacture of lead oarbonato commenced in Chicago in 1910 and the new plant for the production of quick . ..proOesa lead cane along in 1921 along with the facilities for producing red lead and litharge* Lithopona was .'

Only in the Lead Pipe Department was our cost somewhat higher than usual.

NATIONAL LEAD COMPANY *U lUOik It..

The use of a dithizone extraction is obviously an improvement, and this method is satisfactory when there is sufficient lead to be extracted; that is, when the concen tration of lead in the solution to be polarized is at least of the order of magnitude of 1 microgram of lead per ml* This means, we believe, that large aliquots muiit be extracted, and that when small samples are to be used, the lead must be concentrated in some form.

Kingston Don Eugene met with us to establish priorities for reformulation of products to eliminate lead compounds to meet, the requirements'-, of ,06% maximum lead content on solids basis, .