Kehoe Cb) Economies of leaded vs. non-leaded gasoline W.

In 1959. lead pigments were removed from Spred Gloss.

General lead hazards of public (1) Normal lead absorption - chiefly from ingestion- /" ' (2) Threshold of dangerous exposure by ingestion ' B.

Dutch Boy white-lead is pure white-lead.

Being concerned with this problem, the major producers of lead alkyl antiknocks, E.

Al##lh. keg . of this "Lead" reduces to paint in six minutes ijr-- Dutch Boy soft paste white-lead gives pure lead paint at gallon-a-minute rate IX minutes, by the clock--that's all S it takes to make a hundred pounds of Dutch Boy soft paste ready for the brush ... to produce with it over six gallons of pure lead paint.

., I9I4.8 Determination of lead compounds present Results Per Cent Lead as Lead Tetraethyl Per Cent Lead as Triethyl Lead Per Cent Lead as Diethyl Lead Halides Per Cent Lead as Di- and TriethylLead Halides and Carbonates Per Cent Lead as Inorganic Lead <0.00001 O.OOO3 0.0017 0.QOOI4.5 0.225 Reported: 3~2ij-if8 0003688 ETHYL CORPORATION INTER-OFFICE CORRESPONDENCE TO Dz* R.

On the means of exposure and the toxicity of lead chloride and lead bramide: (1) These lead compounds are probably not Class B poisons by the skin absorption route as it is highly unlikely they will be absorbed through the skin. (2) By the oral route, lead chloride is only slightly toxic, its approximate or minimum lethal dose for guinea pigs is 1500-2000 mg/kg.

Dutch Boysojtpaste white-lead is the same strictly pure lead-in-oil always sold under the Dutch Boy trademark.

(COMPANY NAME) DATE ook Ahead with Lead BY LI A 0?

Lead-in-air samples were obtained only at operations processing lead bearing materials.

--tEstablishment of existence^sftd magnitude of normal lead -- --in both primitive and civilised man^-together wlth-eeme indicotinn of -the-sources -of" ihie l^ad* The behavoir of tetraethyl lead in the human organism } ^ i $ treatment of lead intoxication produoed by concentrated tetraethjl lead* The lead hazards associated with the manufacture and blend-ing of tetraethyl lead with gasoline ancfcregulations necessary --for safe handling of this material* ,fp Studies of leaded gasoline the results of which indicate that v*-------- -no likelihood of public health hazard exists from the distribu- -tion of this substance as a motor fuel*" I am merely thinking that it will be difficult for anyone not a ..

Accordingly the level of lead exposure which is required to balance the lead excretion is rather small.

Group A - controls, B-l.2% lead naphthanate in paint, C-6L% lead naphthanate in paint, D-l.2% lead tailate in paint. 3.

The important thing for the investigator in this field to hoar in mind, from the aspect of lead, is that lead in the atmosphere is no new or recent phenomenon, and that the increment due to the use of leaded gasoline in automobiles is difficult to Isolate in view of the several known factors, as well as a number cf others of poorly defined origin, that influence the concentration of lead In the air.