Document X79jz7KEzZMdd4QdJYDY4zomJ

'3K. ` ATh* attached f i l e ilk raprt to tbOnintrodaetJon o f lead t i t n o tto ^ ^ :& * an ndmlctaro to gofolino ia resp eetfiO lr returned to tho for tho etteolloo -of dsslstan* Sw*#oo O ^ X lU S tlju that the rik o f load poisoning fro* the i | i of lead tetro ethyl in gasoline had', been oarefplly oeseldered md th is o ffic e i t not disposed to reeooeemd V ny experimental Investigation of the oubjeet a t the. present time for the followingreeuM est -. ^ ' '/* . ,,v''; ' v*.-i^'*"'-vrv^--r?-'- i X* 10 secure trustworthy data would roqoirft t considerable period of perhaps a year. Thl* daisy would probablypreveatrssulta of an *pr1 ^ .F3V -- inT iitigiU oB froa bolnf of moot p rsetieal use aimed tko tr ia l o f tko matsrislwnder ordinary conditions tkould showwhether thwro i t risk to non* 2* Experimental data of oitbor a p ositive or negative aaturo would bo to o t , . d iffic u lt to interpret with roopoct to tho hazard to human beings alnoo wo haft almoat no Information at to tho rolatifo auaooptlbility to load of man and o f laboratory aninalo. 3 Experimental roaulta would apply to a lim ited aet of oonditlons which might or might not prevail in the use of the material in gas engines. I t seems, however, to th is o ff lee that i t would be eminently proper to oomounicato with the Banufaoturere, pointing out the p o s s ib ility o f harm and inquiring as to whether or not th is feature has bean given coni ite r a tio n . It ia believed that i t would also bo proper to advise health o ffic e r s o f tbs proposed use o f lead te tr a ethyl and suggest the a d v isa b ility of careful watch being kept for aanifestations of lead poisoning. G.f.HeCoy, Di r e c t o r . \