La Salle St., Chicago W hite Lead, C arbonate Sublim ed Blue Lead R ed Lead Super Sublim ed W hite Lead Sublim ed W hite Lead Litharge O range M ineral Sublim ed Litharge Lithopone Zinc Oxide .. u.a.

Hellings - NA During Cliff Hellings visit this week we discussed the blood lead and ZPP level of (shift supervisor) His six month blood lead level is 52 and his Zinc Protopor phyrin level runs at 600-700.

Iced, sad ccrtaia apt- carbesata aad lead cbletida a4ltb b chi aSoyt.

Thanking you for referring this; case to ma, 1 remain Yours very truly,: " -; | * ; ; ' 1 ; ' -: i N8118.01 Further data on the case of Mr* Company Pittsburgh, Pa* December 7,1926* Atlantic Defining The analyses of the excreta of obtained from the Cannonsburg General Hospital, Cannonsour^are as follows* Urine* 3720 cc* - 0.41 mgs lead Faeces Dry Weights 13.15 mgs containing 0*25 mgs* lead* This is equivalent to 0*11 mgs lead per liter of urine, and 0*09 mgs* lead per gram of ash in the faeces.

I trust you will not have the opportunity of seeing any cases of tetraethyl lead poisoning.

1f Significance of results on urine Physiologic factors Variation in relation to lead absorption ie-ik!

THe subcommittee just a few months ago let it be known that it con sidered lead additives a serious problem.

Iced, sad ccrtaia apt- carbesata aad lead cbletida a4ltb b chi aSoyt.

PIG LEAD.

lead.

Examples: Welding fumes Lead fumes - Particles resulting from incomplete combustion.

As you are probably aware the use of lead arsenate has fallen off greatly.

Strictly Pure WHITE- LEAD UR white-lead is pure, O extremely fine in tex ture. and unvaryingly uni form.

It has been our- practice, over the period of years, to follow at suitable intervals the lead concentrations in the urine and blood of persons whose occupations give them significant exposure to lead in the activities concerned with leaded gasoline.

NOTIFY THE LEAD OPERATOR FOR FURTHER INSTRUCTIONS. 6.