I believe the simplest modi fication of the sign to make it both correct and adaptable, would be to use the designation ''Lead Alkyl" where the sign now uses the words "Lead Tetraethyl."

:.t blood and urine lead levels on a dozen individuals who use such an heir dye will be sufficient to reveal the facts.

At the .1 asbestos and lead litharge will be b carts, a be Installed with a 2* x 2' opening on the top .

In the case of lead this is especially true, but it would probably be equally true in the cases of both mercury and arsenic, if we knew as much about them as we do about lead.

LI A 16925 -a j a a* LEAD INDUSTRIES ASSOCIATION.

In general, persons who have never had any unusual exposure to lead at any time, have lead in their blood in concentrations ^ of the order of 0.02 mg. per 100 grams, or even less, while those who have had a significant degree of exposure rarely go below 0.03.

. / He suggests that lead deposits in the bones are mostly oxides, but in ground water they are more salts of lead,.

Ir-lon U. onith 10, If of Vsyr.e University, bn In of whom ooint out that lead is one toxic material about which we know more than scry other.

Ward for information concerning exposure to leads in the cleaning of storage tanks for leaded gasoline.

Joseph Lead Co.

*, locludln^. i*e for lead.

In the case of lead this is especially true, but it would probably be equally true in the cases of both mercury and arsenic, if we knew as much about them as we do about lead.

tofAxj JO, 1965 Total Aonrored Architectural Applications Drought Lead Applications Cable Sheathing Lead Coated Steel (ULH 29-Hot Dip Lead Coating of Steel in a Zinc Saturated Beth - $10,000.00.

:.t blood and urine lead levels on a dozen individuals who use such an heir dye will be sufficient to reveal the facts.

I believe the simplest modi fication of the sign to make it both correct and adaptable, would be to use the designation ''Lead Alkyl" where the sign now uses the words "Lead Tetraethyl."