For a time, in the early period of this rather unique program of medical supervision, we were fairly rigid in our requirements, since anything that developed in a man was altogether too likely to be blamed upon tetraethyl lead.

It Is our understanding that at the time approval was received for in creasing the tetraethyl lead limit from 3 to 4 milliliters, the Los Angeles .Air Pollution Control D i s t r i c t `officials first heard about it via questions from the Surgeon General* Obviously, the lead suppliers were faced with the same question of the "hen and egg" and took the course that appeared best to them -- and now appears best to us -- of approaching the Surgeon General first* If this point can be made clear to him and his coopera tion elicited, we would plan to advise; the Los Angeles people immediately after receiving afavorable reply from the Surgeon General.

Kehoe pointed out, these are for gasoline vapors only and not for tetraethyl lead, le are, at the present time, working with a manufacturer to make our Lead-in-air Analyser available for off-shore use.

Josoph Bigoa Tetraethyl Lead J.

Kehoe: Attached is correspondence received from our Southern Region regarding the maximum allowable limit of the use of tetraethyl lead in gasoline.

Kehoe pointed out, these are for gasoline vapors only and not for tetraethyl lead.

In 1953 Cholak wrote an article in the Archives of Industrial Hygiene and Occupational Medicine, suggesting an improvement in the method to identify the organic compounds of lead which might exist in the urine in the tetraethyl lead industry, alongside with the ionic lead which is alone picked up by the ordinary short method of analysis.

Smith I think it would be best to say that there are good reasons for doubting that the animals in question died as result of the absorption of lead, first, because no appreciable quantity of tetraethyl lead Is K 001.2 :: Mr* Webb #2 5-20-31 , ... ' f , present in crank case oil, and secondly, because only very small quantities of-any type of lead are present.

Ve have used the preparation In adult cases of tetraethyl lead poisoning Without difficulty.

Natl. acute conditions, seasonal variations interim report on health insurance 121 119 120 Incinerator(s), analysis of effluents 194 Industrial medicine and occupational diseases (bk. rev. ) 117 Lead poisoning on firing ranges tetraethyl poisoning with 8 deaths 147 148 Liver cirrhosis and price of alcohol 202 Mental health and the worker 122 Mercaptans, determination in air Mercurial intoxication, a review 183 144 Mercury, determination in blood 145 Methyl chloride, microdetermination 149 Mini-Adak Analyzer, for fluorides 140 Noise control and reduction effect on work criterion for evaluation evaluation of exposure 166 164 165 Odor(s), control in soap process 198 Ozone, in air of Cincinnati 179 Plutonium, determination in urine 177 Pneumatic tools bone and joint damage effect on hands 125 124 Poisoning, epidemiology of accidental 139 Psychiatry behavioral disturbances mental health and the worker 123 122 Radiation (ionizing, nuclear, x-rays, etc. ) damage to small intestine effect on grafted and normal skin food preservation 169 172 170 February, Radiation (cont. ) necrosis and akin cancer protective lead apron Radioactive, personnel decontamination Radioactivity removal fromwater supplies Radium, determination in urine Silicosis of the bone marrow lipoprotein and protein content Stacks distribution of emission from recommendations on heights Sterilizer, ethylene oxide testing efficiency Sulfates, inorganic and total determination in urine Sulfur dioxide determination in air monitoring with lead peroxide cylinders Talc lungs, pathological anatomy Tantalum-1 32, and cancer of the bladder Tetanus, wound management Thallium, estimation in urine Tobacco chewers, oral cancer Triaryl phosphates, toxicity Trlcresylphosphate Moroccan poisoning of 1959 Urinary sulfate ratio, determination Vibrating tools bone and joint damage effect on hands Waste disposal coffee wastes organic contaminants in rivers pickle liquor regeneration Workmen's compensation attorneys' fees (bk. rev,) X-ray(a) control in weld radiography survey of units in Oregon 33 03120769

Kehoe: A question has developed in the minds of a number of our employees relative to the possibility of danger of lead poisoning when working in tanks which had been used for the storage of gasoline containing tetraethyl lead after these tanks had been cleaned and then tested by the Du Pont Corporation and declared lead-free by them.

The quantity or tetraethyl, lead involved in an individual test of this sort is small, and unless a series of exposures of this type continue over a very consider able uortfon of the* day.,,, the loss of BEL to, the atmosphere- is minute.and hygienically insignificant.

T h e 'quantity or tetraethyl lead involved in an individual test of this sort is small, and unless a series of exposures of this type continue over a very consider able nort-fom. of the* day.,., the loss of EEL to, the atmosphere' is minute.and hygienicalXy insignificant.

Kehoe, tetramethyl lead has essentially the same toxicity as tetraethyl lead.

Finely divided lean oxide C'ld&d 'dsqui oxide, FogC-g) Is. produced by burning a restore .of propane* air and tetraethyl lead.'