With reference to the special physical examination required of employees in the Diapatching Department associated with the blending of tetraethyl lead com pounds with gasoline, the present program is as follows!

When cowtaars of lead are told repeatedly that o here lead re- oerroa auffleiant to last only 10 or 15 years sore, they natnrally intensify their eearoh for substitute*.

When cowtaars of lead are told repeatedly that o here lead re- oerroa auffleiant to last only 10 or 15 years sore, they natnrally intensify their eearoh for substitute*.

Jm P BHUAUX ( Institut d'Hygiene et d'Epidemiologie - Bruxelles Bireeteur Dr A.

The absorption of organic compounds of lead, notally tetraethyl lead, is far greater, sufficiently so that it is possible to induce signs -of acute poisoning following local application.

Seoondary lead (lead content).................

How much lead is in the air?

How much lead is in the air?

How much lead is in the air?

How much lead is in the air?

SSTTAATTEEMMEENNTT ,,'yU-t.nt Ai- iMyyX jYk^l.s i f l%6>6 CONCERNING THE HYGIENIC ASPECTS OF LEAD IN THE HUMAN ENVIRONMENT by ROBERT A.

Negligible Isopropyl alcohol Negligible LPG (see propane) ------------------------- TOO' ----------------------- Methyl alcohol 2b - Methyl ethyl ketone 5 Methyl methacrylate Negligible Nitric acid (fumes) Perchloric acid Negligible Perchloroethylene Negligible Phenol Negligible Phthalic anhydride Propane Negligible 100 Sul fur dioxide 100 Sulfuric acid (fumes) Negligible Styrene Nealiaible Tetraethyl lead * Negligible Toluene Negligible Trichloro-ethane Negligible Trichloroethylene Negligible Vinyl acetate 25 Vinyl chloride 100 Xylenes (xylols) Negligible Cyclohexane 15 RSV 0012937 7 "CAUTION" Ensure that all persons at the scene, including yourself, follow these instructions: "DO NOT ENTER OR HOVE ABOUT INSIDE A POTENTIALLY HAZARDOUS CLOUD WITHOUT PROPER PROTECTIVE GEAR.

Negligible Isopropyl alcohol Negligible LPG (see propane) ------------------------- TOO' ----------------------- Methyl alcohol 2b - Methyl ethyl ketone 5 Methyl methacrylate Negligible Nitric acid (fumes) Perchloric acid Negligible Perchloroethylene Negligible Phenol Negligible Phthalic anhydride Propane Negligible 100 Sul fur dioxide 100 Sulfuric acid (fumes) Negligible Styrene Nealiaible Tetraethyl lead * Negligible Toluene Negligible Trichloro-ethane Negligible Trichloroethylene Negligible Vinyl acetate 25 Vinyl chloride 100 Xylenes (xylols) Negligible Cyclohexane 15 RSV 0012937 7 "CAUTION" Ensure that all persons at the scene, including yourself, follow these instructions: "DO NOT ENTER OR HOVE ABOUT INSIDE A POTENTIALLY HAZARDOUS CLOUD WITHOUT PROPER PROTECTIVE GEAR.

Mardi 25, 1965 ' In anoviar to your request for information, on public healtb ./ aspects of lead in gasoline, I attach tho following publi cation -- "Public Health Aspects of Increasing Tetraethyl Lead Content in Motor fuel".

Du Pont and Nalco Chemical are following Ethyl's lead.