The separation of ingested and inhaled quantities of lead appeared to be advisable, if for no other reason than that the prevailing concept of occupational exposure to lead was that long-term lead inhalation caused lead poisoning.

There are probably a. number of Important point# of that sort, nest Important of all, carhops, le the point that field Investigations should constitute an important part of the investigation, by which I mean an examination of consumer for evidences of lead poisoning.

You should bear in mind, however, the precise scope and purpose of our observations, which were not designed to give blanket approval of your Company's products from the hygienic viewpoint, but only to show that they were free of the hazard of lead absorption and lead poisoning.

I think when you finish you willprobabT^coroexo the conclusion that I have finally arrived at, that this is not so much a case of lead poison ing as toxic effects from gasoline fumes.

At whrt renge should, the rrtient ctuelly be treated for leed poisoning if he is otherwise psymptometic but shows high blood or urine levels?

The rule-of-thum b difference lie s in the fact that the cereb ra l sym ptom s in gasolin e poisoning c lea r u n fa ir ly quickly, w hile those o f te tr a e th y l lead p oison in g p e r s is t and tend to in c r e a s e in. s e v e r ity .

No Looking ahead, it b passible to recognize any case of tetraethyl lead poisoning hat occurred potential threat well la advance of its possible among the thousands of persons who have Iran*- materiahration and there h ample lime and sat- ported and dispensed leaded gasoline* In the ofaclory experimental means for obtaining in* ordinary operation* of the American petroleum formation required to establish a standard that industry.

We find no evidence that in areas polluted by lead sufficient to poison horses. human inges tion of lead through food chain mechanisms la a public health problem, B, Health Hazards When men and women in Benicia and Crockett arc compared with respect to blood lead, the Crockett populations have significantly higher values.

No case of tetraethyl lead poisoning has occurred among the thousands of persons who have trans ported and dispensed leaded gasoline* In the ordinary operations of the American petroleum Industry.

In relation to industrial lead exposure (l ) Threshold of Intoxication Urinary Standard " (2) Dosage x time factor in exposure ' Intermittent exposure and non-exposure Intermittent accumulation and loss (3) Importance of normal alimentation in relation to dosage of lead, by mouth or by inhalation (4 ) Importance of adequate water intake and renal output 2 In relation to diagnosis of lead poisoning _ (l) Lead exposure and absorption and clearly demonstrated ` by the levels of lead in the urine and blood, even for - considerable periods after exposurehas come to an end

*n in Slides 1 and 2 (1) Threshold of Intoxication Urinary Standard (2) Dosage x time factor in exposure Intermittent exposure and non-exposure Intermittent accumulation and loss (3) Importance of normal alimentation in relation to dosage of lead, by mouth or by inhalation (4) Importance of adequate water intake and renal output 2 In relation to diagnosis of lead poisoning (l) Lead exposure and absorption and clearly demonstrated by the levels of lead in the urine and blood, even for considerable periods after exposurehas come to an end.

Under conditions which allow for spillage, evaporation of spilled gasoline leaving residual tetraethyl lead and dust of decomposed lead, shin contact, and ingestion from contaminated hands, is the quantity of absorption sufficient to produce accumulation of lead and lead poison ing?

Childhood Load Poisoning movie 39.

Interrelationships between lead in blood, lead in urine, and ALA in urine, during lead work.

Childhood Load Poisoning movie 39.