at io n al Lead Co mpan y ^ Philadelphia Branch TtUIPMOMt.

Using the lead carbonate the zinc oxide contents are 48$, 39$, and 34$ respectively.

Exposures to lead and its compounds. 3.

The early experimental work In this laboratory indicated the character of the hazards of the mixing operations and of all other operations associated with the industry* It became apparent that the compound tetraethyl lead was an exceedingly treacherous lead compound and that It wohld be necessary to rigidly regulate the handling of the material* From time to time* therefore* we have issued instructions based on the continued observations of Industrial conditions* Tie have improved the equipment through the engineering facilities of the Corporation in such a way as tomake the industry safe.

Even at the present time he shows lead in the urine* Does this, in your opinion, look like at any time he had a lead poisoning, and is he now suffering from the after symptoms of a previous lead poi soning?

,v- t'' rv Ik) a - Rod L*ad ToaHaloal Litter Ve. ) ( - Metal protective Red Lead Painta _ . , b - Red lead Technical Letter Mo. 5 f federal Specification TT-P-86* ~ e - Rad lead Technical Latter Bo. 6 h - AA Iweetidetioo et Priaera Tor d - nod Lead Jbchnletl Letter Mo.

W (Aeotato type) ^'.7 100* lead Gferawate. .

COPY LEAD E3OTSTRIES ASSOCIATION 60 East h2nd Street How York 27, If.Y* GPY October 3, 2?

Harry Hollander Lead Poisoning; A Federal View Hon.

O) ^ 55 C > CD CD lCOo^g00 co CO Q ^ ^ 05 O co Ol O CO CO CM TEH 0532621 DUP050033890 HANES II sample areas TEH 0532622 DUP050033891 Gasoline Lead and NHANESn Blood Lead Levels Average Blood Lead Levels (//g/dl1) co m co ca r- o a> a> 05 05 gS IS.

LEAD IH CHZXTCJtf.

About 95$ of the lead discharged to the air comes from these sources.

AntiaoiT Kardraa lead ad Ina prom It!

See 29 CFR 1910,1025, Lead.

"Lead Tetraethyl" by Dr.