Georg Callhgaert Ethyl Gasoline Corporation 783 East Milwaukee Avenue Detroit, Michigan Dear Cal* I have seen one of the simpler types of mercury detectors as supplied by the General Electr1o Company, and I am very much Interested in knowing that they have developed or are developing a more precise equipment for this purpose* Hot only am I interacted in this device in connection with mercury' closure, hut I am also definitely interected in the application of some such principle for the detection of tetraethyl lead* You are wellaware, no doubt, that the instrument would ho of very little use to us unless it would give fairly accurate quantitative figures* If' th5.a could be done* I am sure that we could find good use for such equipment.

Bohlnani I hare your letter of February 20th concerning the physiological effect of eshauat gas from gasoline containing tetraethyl lead.

Coheir; I have received a letter from Sergeant Cohen# asking for infor- \ mation about tetraethyl lead, and I have sent him all of the \ infoiraation ve have.

It is known that . . . 2-ntohthylaxnine and tetraethyl lead are converted to carcinogenic compounds."

Kehoe Laboratory of Applied'Physiology University of Cincinnati Eden Avenue Cincinnati, Ohio Dear Dr- Nehoe: This will acknowledge receipt of your letter of July 25, 1940, in which, you ask for a date Tvhich is mutually convenient to discuss certain matters per taining to tetraethyl lead.

I have only one other comment to make, and that refers to the use of dye in this tetraethyl lead.

He offers to make available any information that the Ethyl Corporation has that would be useful to me in connection with the Surgeon General's C&mmittee that has been appointed to consider possible increase in the permissive amounts of lead tetraethyl in gasoline.

Edgar regarding their shipping of tetraethyl lead to supply houses and individuals.

Because of the prominence he has given to the aspects of tetraethyl lead, we are being pressed repeatedly by major customers on the West Coast to render an.opinion or take some action.

It is known that . . . 2-naphthylamine and tetraethyl lead are converted to carcinogenic compounds."

As to the knotty problems that you are coming upon in connection with tetraethyl lead and etyhl gasoline, I will be glad to discuss them with you at any time that is mutually agreeable.

Because of the prominence he has given to the aspects of tetraethyl lead, we are being pressed repeatedly by major customers on the West Coast to render an opinion or take some action.

"21. it is known that . . . 2-ntohthylamine and tetraethyl lead are converted to carcinogenic compounds.

stibine Stoddard solvent 105 08 50 450 302 20 to 399 styrene monomer 90 11 6 1 914 295 28 sulfur sulfur, molten sulfur chlorides 245 280 sulfur dioxide 14 sulfunc acid tellurium 1,1,2,2-tetjabromoethane 1,1.2,2-tetra chloroethane tetrachloroethylene -- tetraethyl lead 185* nonflammable nonflammable nonflammable - 463 28 295 31 248 31 dec 44 0 2 0 (approx) 124 23- SD-37 C-48 2 1 0 275 SD-74 592 210 SD-77 300 SD-52 C-39 3 0 1 325 SD-20 C-12 >100 19 1 66 323 SD-34 C-9 SD-24 C-11 12-60 12-59 12-55 9-57 4-64 12-65 8-63 1419 *Open cup flash point 'The higher the number, the slower the evaporation rate Number in this column refers to date of publication in AIHA Journal

I wonder if you would be kind enough to write them a letter, perhaps telling them in a general m y rhat the effects of tetraethyl lead are when added to lubricating oi3..