MacCcnnell for exhibiting tetraethyl lead among other industrial hazards.

June 10, 1935 Dr* Graham Edgar Ethyl Gasoline Corporation Chrysler Building Hew York City New York Dear Edgars Within the next ten days I hope to have completed the studies which we have been making on the absorption of tetraethyl lead out of lubricating oil W studied this question, making use of experimental animals frequently exposed to various concentrations of lead In oil# Some of the work is already finished but I am waiting for the analytical data on the lower con centrations# 411 the indications are that the rate of absorption out of oil is somewhat lass than out of gasoline I am expecting to leave Cincinnati the last week in June or the first week in July to be gone on a, vacation for some weeks# However, I shall make it a point to got the report on these studies Into your hands before I go away# If there are any other matters pending which may" require my attention before I go away, I would be glad if you would bring them to ray attention at once# With kindest personal regards, Cordially yours, RAKsTS HE 0015537

June 29, 1933 University of Cincinnati, College of Medicine, General Hospital, Cincinnati, Ohio Gentlemens In reply to your letter of June 27th, we do not have any chemical cartridge respirator that we would recommend for use in a lead tetraethyl atmosphere.

June 10, 1935 Dr, Graham Edgar Ethyl Gasoline Corporation Chrysler Building Hew York City New York Dear Edgars Within the next ten days I hope to have completed the studies which we have been making on the absorption of tetraethyl lead out of lubricating oil We studied this question, making use of experimental animals frequently exposed to various concentrations of lead in oil# Some of the work is already finished but I am waiting for the analytical data on the lower con centrations e All the indications are that the rate of absorption out of oil is somewhat less than out of gasoline I am expecting to leave Cincinnati the last week in June or the first week in July to be gone on a vacation for same weeks * However, X shall make it a point to get the report on these studies into your hands before I go away# If there are any other matters pending which may require my attention before I go away, I would be glad if you would bring them to my attention at once# With kindest personal regards, Cordially youra, RAKsIS XE 0015537

S k&SS.S;l AVOID INHALATION (See Quick Reference Table) Ordinary Filter-- Nuisance Dusts Special Filter-- Lead Dust (Litharge) RESPIRATORS Chemical Filters for Paint--Mild Acid or Organic Vapors --9-- SC 008558 LAM009770 WEAR GAS MASK (See Quick Reference Table) WEAR IMPERVIOUS CLOTHING (See Quick Reference Table) HOSE MASK AND BLOWER For Long Periods of Protection WEAR AIRPAK (See Quick Reference Table) SCOTT AIRPAK All-Purpose Respiratory Protection -10- --11-- SC 008559 LAM009777 sc 008560 WEAR GAS MASK (See Quick Reference Table) CANISTER TYPE MASK Organic Vapors (tetra ethyl lead) Smoke AVOID EYE SPLASHES AVOID EYE SPLASHES (See Quick Reference Table) Face Shield Attached To Hat FACE SHIELD --12-- SPECTACLE GOGGLES --13-- LAM009772 AVOID EYE SPLASHES (See Quick Reference Table) --14-- HAZARDOUS COMMERCIAL MATERIALS--Reference Notes 1.

(Indiana) will present the petroleum Industry's views on ths future for tetraethyl lead anti-knock compound used in practically all gasoline today.

(Indiana) will present the petroleum Industry's views on ths future for tetraethyl lead anti-knock compound used in practically all gasoline today.

As to the problem of lead absorption through the skin, I think it Is fair to say that with the exception of the organic lead compounds, such as tetraethyl lead, there is no significant absorp tion of lead through the skin.

Lead oxide fume {lead seaqui oxide, PbaO@) is produced by burning a mixture of propane, air and tetraethyl lead.

Lead oxide fume (lead seaqul oxide, Pb2O 3) is produced by burning a mixture of propane, air and tetraethyl lead.

Lead oxide fume {lead seaqui oxide, PbaO@) is produced by burning a mixture of propane, air and tetraethyl lead.

Genti eraen: Please let us have your quotation on one 50 gallon druat of tetraethyl lead Anti-Knock Fluid, Very truly yours, COMMERCIAL SOLVENTS CORPORATION s/ * Convenes1 CEO:sbw 0020599

Gentleraen: Please let us have your quotation on one 50 gallon drua of tetraethyl lead Anti-Knock Fluid, Very truly your3, COMMERCIAL s o l v e n t s c o r p o r a t io n 3/ Guiveneel ''.'

Kehoe UECThdoneelinlveKegAerevstetionetyufreinMogfedLCicainibncoeirnantoartyi Cincinnati, 19, Ohio Dear Bob: I have your letter of February 19th on stabilization of tetraethyl lead to oxygen, I amnot famamseilnidairngenoaugchopwyiothf ythoeurmlaetttteerrtotoadthveiselabyooura,tobruyt aInd I amsure Dr.

th about the plana of oDtrh.eMr aincCdcunsnterlilaflohraezxarhdisb.iting tetraethyl lead among mbaQinetwefeeoot.trhroifmnagittanhtitsatoieitmnnrcIeeea.sbstI.hoHuasotlhlwDaenvlrlo.ertbMeIbaocwoCnaoFboumnlliedyrnsewattlolpa'yyspoaruetteotxceahin^aSidetobeuipttthhhroewabvAhDaiminbceghelytrrimaconaaiyyt I am taking this occasion aathdgedairnepsrostoebdlecmtaolol Dfyrlo.euaErddagitantre,nextciohonancuestrtonginmagysevlse.atrtioeTurhseoreprhigiasisnensaolloyf rwinuofsuohlrdmabbaeotiuovtnertyhasisuissbeufuat vlIatiowlaobhuallevdeaasptopmyreoeucoriafctetohnehvaevdniainetegncisenu. chsuI tp' port of the statement in the letter which Dr.