Document reNZ8GeXvqqwv7Vr15LkE2d2v

January 12 1955 Hr* A. E. Mittnacht Ethyl Gasoline CorporationChrysler Building New York City New York Dear Mr. -' `Ifctnacht: Your letter of December 28th enclosing the correspondence of Hr. Boyle, Mr, Holston and Mr. Hal verson concerning the nature of exhaust gases from automobiles which burn Ethyl Gasoline, has already received my attention through correspondence with Mr. Boyle. I am attaching herewith a copy of the letter which I wrote to Dr. Hunter, giving him my opinions on the subject. jonvI trust this will be satisfactory for purposes. You may make use of my letter in any cor respondence which you see fit to carry on with Mr. Halverson and Mr. Rolston. Very truly yours, RAK:IS KF o o i i ao 3 h ill December 25* 1952 Dp* A. W* Hunter ' Hoorn 1022 Medical-Dental Bldg* Vancouver B*0* Dear Doctor hunters - . A recent letter from Mr. C* K. Boyle of tbs Ethyl Gasoline Corporation contained a request that I write you and give you available information as to the results of exposure to exhaust gases from automobiles which employ Ethyl Gasoline as fuel. - '' The facts as gleaned from a number of sources are as follows* Exhaust gas from cars which burn Ethyl Gasoline contain carbon monoxide In concentrations which do not differ significantly from that shown when ordinary gasolines are burned* As you doubtless know, the con centration of carbon monoxide in exhaust gas varies considerably with the condition of motor operation* The maximal carbon monoxide concentrations appear when the fuel mixture is rich and when the motor Is working at lower speeds* The contusion of Ethyl Gasoline gives rise to the customary concentrations of carbon monoxide plus finely divided lead in the form of bromide which is so finely divided as to behave essentially like a gas* The concentration of lead bromide is not sufficiently high to produce ?n appreciable effect for short exposure The high concentration of carbon monoxide -limits* the exposure to undiluted exhaust gases so much that there is no possibility of the development of lead poisoning or appreciable lead absorption as a result of exposure to undiluted exhaust gases* If the exhaust gas is sufficiently diluted to avoid carbon monoxide intoxication the lead absorption is then negligible* Thus only other materials in exhaust gas as a result of the combustion of Ethyl Gasoline are small amounts (little more than traces! of hydro bromic acid# water vapor and carbon dioxide. From these facts, it is entirely clear that no clinical difference pad no experimental difference can be made out in carbon monoxide intoxication from automobiles burning Ethyl Gas-line as com pared with those which b u m ordinary gasolines. 0011304 Dr. A* W. Hunter If you are sufficiently Interested in the subject to review available experimental data, I should be pleased to cite you to the sources In the literature* Very truly yours. IsAKjIS Kf oo i :4$)i o a r -J K.'-M'a