Document dD5XBBergN5jvgKYkb2pa1qZR

-60 84 ESTABUSHED1802 E. I. du Pont de Nemour s &Company I N CORPORA T ED Wil mingt on 98, Del awar e . MEDICAL DIRECTOR'S OFFICE October 13th 19^9 Dr. Robert A. Kehoe Lett ering Loborat ory 0ine innati, Ohio My Gear Bob: tdhuelyMiasnutIofaacmwturCritihneagirtmhCeahneDmoaiftsattshSeAhesMestoescdiioacntailocnAhedmavniidscoaorlyucroCmoonmpeomuainntdtdese. oonIfly think it is quite possible you hove seen some of these Data Sheets from tine to tine, If you have you realise that it is impossible to put into then o.ll of the existing informa tion relative to any existing compound but that rather you hove to hit the high spots. My newest assignment is to write a Dota Sheet on Lead and Lead Compounds. I would like to write a general Data. Sheet covering Lead in general ana start it off with a lis t of the lead compounds rather in the order of their toxicity. I am wondering if you would be kind enough to write out and classify a group of lead compounds which in your wide experience should be included in this classification, such as the most toxic, the least toxic, in order that I might incorporate it in my write-up. Possibly you may feel that they all should be handled with the' same degree of caution outside of cur own particular* problem of tetra ethyl lead of course. I would be very glad to hear from you at your conveni ence. Yours sincerely MEDICAL DIVISI01! G-HG-- ^ / -~-r Cr. H. G-ehrmann, M. D. Medical Director