Document OE8v57X6R5q61LEka051o8jmK

\ IN R E P L Y R E F E R T O UNITED STATES DEPARTMENT O F THE INTERIOR Geologic Division GEOLOGICAL SURVEY FEDERAL CENTER, DENVER 25, COLORADO October 11. 1962 Dr. R. A . Kehce Kettering LaboratoryCollege of Medicine--Eden Aye. Cincinnati 19, Ohio . Dear Dr. Kehoe: I believe that your criticism of our article on lead in Science is veil taken. We did not intend to suggest that tetraethyl lead occurs in plants as such and enclose a copy of a letter of explanation to the Editor that we have just -written. We hope that this straightens out the confusion. However, it is fairly certain that the contamination originates from tetraethyl lead that has been added to gasoline and that the lead is eventually being breathed and eaten by stock and people. I agree that the lead is probably inorganic at this later stage and that this makes the lead much less dangerous than if it had remained in an organic form. I have read your statements on behalf of the Ethyl Corporation at the hearings in Los Angeles. The data presented was based on the lead content of blood. Wouldn't analyses of hair and teeth give additional information on the excess lead that might be stored in the bones throughout the life of the individual? In any event it has not been proved that these increments of lead have no long term affect on animal health. I hope that your foundation will continue to study the health aspects of this problem. Sincerely yours, HLC:st Enel ?o<j !a Helen L. Cannon, Geologist Branch of Geochemical Census 2 t autor SCiSS ; :; I53L5Swaaclataefct&> 3.H* %1 -. - DsrEditori eIna ri:;eCplayts2togit3&tsiacaroiticiirsemgsststd&irgeacbteydtesettr-seatrh'ySle.g&lesagd&,e"rvTsadritdicle isttieisssitssrtusisaeet^wstsonoaydtslu sataudeUsta'yoSSO.itgigtoost&ogtat3teitssbaXatsItraaetcetuttssrsotaalesisistsalisssgrtL&eailelepaaaisdaoacruiggcttieoiass,sasebutseusitl^iteipiraalealaetltal.d slisSiloilaOdiadgatasfucressaisasfcsaiaiatbaregaaabisistriakcta,u Wtagjolaglga s ti Siacfcely yois?-, ffiC-St ce: Dr. R. A. Kehoe isSe a a L . C a sso a a lo t ie s Ek^efe GoelfsisLCessas