Josoph Bigoa Tetraethyl Lead J.

Accordingly, the number of directors representing the tetraethyl industry was in creased to two for 1966-67, but this change was not regarded s precedent setting by this nominating committee.

We have been obtaining more and more precise and adequate information concerning the study of men engaged in the manufacture of tetraethyl lead, and there is no question that the hygienic status of these plants has been greatly improved over that existing in the period from 1926 to 1930.

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.

Edgars Some days ago I had a letter from Sevan reporting a case of supposed tetraethyl lead poisoning at the Monapoll plant of Italo~Americano in Italy.

I think it is somewhat misleading, and since this is the onlyhazard from tetraethyl lead that goes beyond the manufacturing and .mixing plants, it would be better,in m y opinion, if such cases were referred to under some such heading as "cleaning gasoline storage tanks".

.-2 a~; VS C Data Sheet 9 References MCA Data Sheet AlHA AM Hygienic fiu/Jefm Cutde\ 1,1,2,2,-Tetrachloroethane nonflammable 31 D 8.3 5,3.2 4 D SO 34 C 9 Tetrachloroethj lcnc Tetraethyl lead Tetrahjdrofuran - nonflammable 31 W 4,7 3,2 3 O 185* - O 3,1,8 5,3,1 6 - 3 2 3 62 118 40 0-1,3 1.2,3 4 D 2 3 1 SD 24 C-ll 12-65 8-63 6-59 Tetr&hn 160 08 50 24 (212 F) (212 F) O 3,1 3,2,1 3 D 1 2 0 Tetramethyl lead 100* - D-3,1,8 5.3.1 6 - 3 3 3 Titanium dust 0 045 oz/cu ft - C-6 3 1A 485 C-75 6-59 Toluene 40 12 71 31 W-1,4,7 1,2,3 4 C 2 3 0 204 SD 63 C-77 6-57 Toluidine Trichloroethylene Trinitrotoluene 185 - O 3.8 3,2.5 4 B 3 2 0 SO 82 99* 12 51 90> 36 (practically nonflammable) W 4,7 3.2 - D -- 389 SD 14 C 8 2-64 - D-1,3.8 5,1,3 5 - 2 4 4 314 10-64 $ Under special conditions See details in previous chapter

Beatty B:C Men vho vlll handle tetraethyl lead at Lake Erie Chemical Company.

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.

Webb:- In preparing for the trial of this case which, by the way, has been continued over the present term of court, we realized the import ance of proving that the amount of tetraethyl lead mixed with gasoline at Charleston in 1929 was not excessive.

Beatty B:C Men vho vlll handle tetraethyl lead at Lake Erie Chemical Company.

In connection with their investigation of the relation of tetraethyl lead to lubricating oil performance, the Laboratories have done a certain amount of work in which tetraethyllead was added directly to the lubricating oil.

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.

It is my understanding from sueh information as is avail able that Evans had no exposure to tetraethyl lead or Ethyl Gasoline since 1926.

D. '2I4-J7 MEDICAL ARTS BUILDING CATHEDRAL STREET AT- READ Ba l t imo r e , Ma r y l a n d February Twentv--fiffch 1933 Dr, R, A, Kehoe: University of Cincinnati Cincinnati, Ohio Bear Doctor Kehoe: T or. taking the liberty of -writing you at the suggestion of Dr, Graham Edgar, Director of Research for the Ethyl Gasoline Corporation, Dr, Edgar tells ne that yon.are doing work on the physiological effect of exhaust gas from gasoline containing tetraethyl load, - I am partioularlv interested in this, as I have occasion to fly Hornet powered' airplanes witu short exhaust stacks , I Vv noted certain symptoms, -Pter long flights, suggesting too imch carh^nmonoxide inhalation, or ^ossihl-"the effects of lead.