SAF E TY COMMITTEE O.

FORM 3 3 7 LAW DEPARTMENT TIDE WATER ASSOCIATED OIL COMPANY A S S O C IA T E D D IV IS IO N 7 9 N e w Mo n t g o m e r y S t r e e t S a n F r a n c is c o , C a l if o r n ia June 14, 1S38 Hobart A.

Copy August 20, 1940.

RDofeiqsMutrioirbetomurteiFnoutnselfaondr Uthsee oHfygLieeandicTCetornaterothlyolffothrethMeanPurfeapcaturareti,on Foreword The hygienic control of operations involving the production or use of lead tetraethyl differs from that ' required in the more ooranon lead trades, in that there is serious danger of exposure to a liquid organic lead compound, aa well as to Inorganic lead compounds Exposure to lead tetraethyl arises from the volatility of this compound and also from its absorbability through the healthy unbroken skin Its vapor pressure is such that under the conditions of equilibrium at 25C* a concentration of approximately 5 agm* of lead per liter of air will exist Its absorption through the skin occurs at such a rate that it must be removed from the skin (best done with kerosene) within fifteen minutes of contact, if appreciable and even dangerous (dependant upon the area of akin Involved) absorption is to be avoided For these reasons it is essential that all steps of the processes of manufacture, transportation, storage, and intro duction into gasoline be surrounded by such safeguards as will prevent exposure until the material has been diluted with gasoline to the concentrations which, in commercial motor fuels, have been shown to be safe Manufacturing operations Involving the presence of lead dust and fume must be rendered safe by the customary methods of segregation of dusty spaces and squlpment, by the use of properly designed containers for the handling of lead-bearing materials, and XE" 0021287 2 / cleansing floors and the outside of equipment at frequent and regular intervals by methods that will not disseminate dust.

DEPARTM ENT OF CH EM ISTRY W.

Jun e 3 , 1956 Dr.

May 19, 1937 WMOhro.iortThhinagaatosn2, Midgley Bear Tcarat dI iswcouusldsiownriwteheynouyouprowSmeervpeetlryianlondCaiytnhsceiansgnuoabtIijeltcoatlsdot.fyoouur mmbahhAwynhappnatwertpaoeIptthheihgshaneauxrnohoaeorrhomeeeaeeesedseeooutpteatarolnynttsuwore.ncIltrrllltaoesesrbpmeaaIroocItesdeelamhenokferlif,isdrglblsennmyoneepct)sitcqileueitsrhconafestsorroonereuruorohwonaeaidywaatufesrmednrhebdmsastrlr,t.mhsukdhleomebceeaootaetichvhhtyvecyadiciflcmhnoaebhrohetedoIeeiteetctsnoodeteewrnmatrtueeyhhycawFnlootisrrerioenoskaaIenirpif..attvciihsnnmnoephgasgalraeioodidipcltchoitprltarlprmwvhotnsohgIhefTehqefiortsoeesonyecaohaueaurdboewtadpfntvttrnIrtmtihhhyearsdmnecptoatdreheoaeppobeignosesahooalttrafnpmidtoreytrureelarttntieyoohomusbfrpreeesnfs(cvbb*bueifWeaetdsteitdIrailgioehlennleesasufotrnulieoehdehdexstcmvtlfdimtsmtenupabsmtoteitentttIidahac,shdhmootbtsecrsioraheibeysmhaneyihsinottdrhxeenhaneyoaacliotasnsteetnehdaohtsdahdiiftv.turlcunnnmhneodoaarbnilremsabaeovsdsIyroutttteophweghenonwbesewWrsfsosteeeyriaptosociiau.ethmunoeoshbbhovrssapotnffrrihddvchunosnYeeeforadcehaettidynreotlatphsssreolttahnesohoenyeshedrurnouplnuegcdoeisspbieiftloorrmolnodhbseuwobctahtieftuhmlchegasherssptttuoiayeohihnsnebysaeeInertarltmslpnphgeddodssaioemtliitoseoezvslpoebIpaync.rtaeireohaostpllroc,ocstemoomndeabaedqadlriatammvsgosdooTeunlloefadty,he.tnsdocee.aohc-r,uaindse,, Mr, Thomas S, Midgley 2 amMapsoucefhoamcriroygeetuhushhlcriefhattoahstmleewdaaooeltgisqudItioensIuesrffrtemosatshrfsytimiaiaonoennutaanlodttdsyaiio*onotphnudnohyfIsyoyah.sursaoeiiemtrcuuewIirpadaqoinmnaysulrhdssi.ltitaosghnoyauhaoAclctdvuevIitneaewasorteyenmuafliygslsalagrpldedsrcereeaehaecmnytraatqevvoteu*eeatnuahnsttreedsaItsowrwotevmanelimietfotrcohhpeleeqeseovnucmeuinetlear Sincerely yours* RAKt l s f/ j / reravirTerar,"o>.

May 51, 1945 Dr.

July 2, 1963 Professor Harry V.

January 8, 13A5 Mr .

August 28, 1970 John S.

'r. 1. ; v -'leek - X*0 *i u 0 - -ClILCiV/lIl Airline Hose Aquipncni Load-in-AIr Tests Dei?

-e0 ^ ' a s s n & ip g|2"5r 201 N ORT H BRA D D O C K A V EN U E PHONE CHURCHILL - 5900 P E T ^ S S T O G B, PJL December 10, 1958 CABLE "M INSAF'* PITTSBURGH John T.

October 7* 1340 Dr* George Calingeart Ethyl Gasoline Corporation 7500 Yfcst Sight If11* Road Detroit, Kiehigan .

May 10, ISkO Dr, E, C.