Document jBeDZXqZD7jJdE6x4zOLk5m1p

FEDERAL SECURITY AGENCY U. S. PUBLIC HEALTH SERVICE IN REPLYING, ADDRESS THE Industrial Ifygiene Research Laboratory Na TIDNa i. INoTlTUi1L Ox r. x, i /Th ixETi.xLoD^. 14, Mahi'junJJii December 10, 1945 Dr. Robert A. Kehoe Kettering Laboratory of applied Physiology University of Cincinnati Cincinnati 19, Ohio Dear Boh: This will reply to your two letters of November 9, 1945, which we discussed at the recent meeting of tne aSA Subcommittee in New York. With regard to the possible visit of Mr. R. P. Lowe of Proportioneers, Inc., I shall be very pleased to discuss any matter he has in mind with regard to the use of DDT as an insectidide. I sjm attaching a copy of a letter I sent to Dr. Patty listing proposed papers personnel from this Laboratory could present jat the coming meetings of the various Industrial Hygiene ^Associations in April. You 'will note that neither DDT nor xylidine were mentioned as topics, a s I informed you at the ASA meeting, we are now engaged in compiling as one bulletin all the work we did on xylidine. When this is completed we propose to ask for clearance for publication as a Public Health Bulletin. As you are aware, several of the professional personnel of different disciplines were engaged in this study. Therefore, it takes considerable time to corre late all the information into one bulletin. The condensation of all of our material into one short paper for presentation would be rather a difficult job, but still more difficult would be fairly establishing the authorship problem (with which I imagine you have had some experience), However, some member of our group could present and discuss our findings in the discussion of your paper. Kindest personal regards, Sincerely yours, /c? yb Paul A. Neal, Medical Director Chief, Industrial fcfygieae Research Laboratory PAN:clb Attachment nduatrial Hyjieji# ?s.4e~ruL Li-t'oratory ! LwiliblL -jI i'a 14, L..*vX*iu-X*^ Moveneer 6, 1945 Dr. F. A. Patty Chairman, Program Cosvaittee Americas Industrial Hygiene Association General Motors Corporation 435 3. Liiiwaokce ^venus 1-esroit I, His-i^in I ear Dr. i/osty: luis wiis acknowledge your letter of October 30, 1945* asking for .suggestions for toe program, for the next convention of the ..imbricata Industrial Hygiene Association to be oeld jointly .vith tae American AjsociatUiu of Inauj&x-aJ. Puysiciuns and Durgsbau, ?Ae Joiiouul Confurance of Govtroo ;. ..add 4 lal Hygianiaus, Tae ladu-tr: ro*, and Iniustriax. DaatiJSJ, at tie Hotel Gherman, dhiougo, .iprix 3th to api-il ijtn, 9*0. I -1V9 disoudaod your ijttar Alta saror^l of ay ooiic-ijuee in the Ldlor-ifcory and I am giving below several papers which could be presented on acre of this Laboratory if you so desire: (1) "Toxicity and Potential Dangers of Ithylene Dtchloride," by ?. A. Gurgeor. Leon A. -ieppl. There has been a greet increase la the use of ethylene iienlorid# both front tae usual industrial standpoint, as well as an inseotioide. The toxicity end potential dangers of ethylene di cnlorlda to several species of animal* following long continued exposure is discussed. (2} Polyneuritic dyndrone in Occupational Diseases," by ?. A* Surgeon d. I. Slaver*. `Jaurltic aanifestatione are becoming mors and more important among industrial workers who are potentially exposed to various chemicals. 4 general discussion of this is given as weill as a recent study by tais Laboratory on polyneuritis among employee* in an arsenal. (3) "Tbe Appraisal and Potential Dangers of Petroleum solvents with Special Seferonce to Particle 31ze," by Pharaucclogiat Joseph L. Svlrbely. The ipcreated supply of certain hydrocarbon mixtures result ing from the cracking of high octane gasoline has made suoh N 24864.01 ']` O7 1i CO  *-- nr,,:*rials available on a X^rge scale. Tiie toxicity and potential danger* ol' practically all of ibrae hare not hereto been reported. The use of such mixtures &a sol vent# for DDT and other insecticide* and their uae as fin* aiat and aerosol pose* a difficult toxicological problem. (4) "Volatile Hydrides of Toxicological Importance," by BioaheaiJt Dtawart H. Webstar. Vothod.i of preparation, uoe or occurrence in industry, relation ship* between toxicological effects and cuseical properties, acute vs. chronic affects, the hemolytic hydijidsa, T'iniral lethal dosage** volatile hydrides as Lercs. in industrial toxicology. (5) *Tbe Acute and Chronic Toxicity of Wethrl Chloride for Labor'd tor:* Animals," bv Physlolo-:i-3t V, R. *plth. Tiler* has be-in a r^rVrad im-sise in the industrial u3ea of npthyl chloride during the -war. sufficient L n forma tion j is not -iTnilr.ble 1". the literature to definitely define safe worScia^. conditions for methyl chloride. The results of a study extending over s period of about three year* will be discussed. (6) "A StUdr of the Ffficlmoy of "thoda for Obtaining Vapor Samples in Air," by Scientist (Physicist) H. L. Andrews, Jr. Chemist Dorothy C. Paterson, and Associate Physicist Sillla* C. Whits. Present day analytical procedures nave an inherent uccuraey considerably greeter then tost of the sea;Hag methods. UltreTiolet spsotroscopy and xtass spectrometry have been used in the analysts of air samcle* oontainiag benzene and various derivatives. The results of the measurements ere analyzed in teres of the methods used to obtain the samples. Sincerely yours. i C\ W ^ n((A\- I \ V Paul A. Heel, Medical Director Chief, Industrial Hygiene Research Laboratory PAR:clb CC: Dr. Townsend Mr. Bloomfield