CITY OF PHILADELPHIA DEPARTMENT OF PUBLIC HEALTH '-

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November 11, 1971 George Roush, Jr., M.D., Medical Director Ethyl Corporation Laboratory of Environmental Medicine 1700 Perdido Street New Orleans, Louisiana 70112 Dear George: I have neither seen nor written to you for some time, ana I feel very much as though I have been unduly isolated (from you), although I do not acknowledge any intent on my part to isolate myself.

f Gr a h a mBd g a r DIRECTOR OF RESEARCH Et h y l Ga s o l in e Co r p o r a t io n Ch r y s l e r Bu il d in o 405 Le x in g t o n Av e n u e Ne w Yo r k November 13, 1935* Dr, Robert A, Kehoe University of Cincinnati College of Medicine Cincinnati Ohio, My dear Bob* I have your letter of November 7th -with enclosed oorrespondenoe -which I am returning herewith, I hardly know -what to say about this matter, X have discussed it at length with Mr, Walter and the facts seem to be somewhat as followst- The Australian situation differs somewhat from that of the United States in that there is at present no uniform practise among the three companies who are marketing leaded gasoline in Australia* Some of them sell premium gasoline only containing lead, others sell premium and regular grade gasoline con taining lead.

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EEHYL CORPORATION Inter-Office Correspandence To: Dr, W, Be Ligett Frca: Dr.

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