Document gD05M8abmp4xqp2b2Ly6M91RL

February lb, 1950 t>r. Lou la W. Spolynr, Director Dlvlalon of Industrial Hygiene Indiana State Board of Health 1099 West Michigan Street Indiannpolls 7, Indiana Dear Dr. Spolynr: I enclose an application bulletin on our Aroelors. Cn page 19, there lo a nummary of almost all our toxicology Information on this compound. If the case you refer to is In Draxll, Indiana, our company has had aotne contact with the problem. This particular installation weed a temporary heat transfer system, and thus did not make the Installation air tight. This la contrary to our sxpresaed Instructions when' Aroclor la to be used at sieveted temperatures. Upon hearing of the Illness, ons of our development engineers want to the plant and gave hla recommendations, and then X called the plant physician to try to obtain sons Ides of what the Illnesses sere. As far as I could determine, two men suffered from gastrointestinal upset. I suspected . the possibility that' the'Aroclor fumes might have caused liver damage, but was unable to obtain this information over the phone, r was also unable to oontact the employee's physician. Tha toxicology of Aroelors is somewhat conTused. The experimental work was done by Dr. Drinker at Harvard about 12 years ago, and was done in connection with chlorinated naphthylene, chlorinated diphenyl, nnd chlorinated diphenyl high boiler. Both of these last two are Aroelors. In the particular work at Harvard, Dr. Drinker found that Aroclor 1203, which means diphenyl chlorinated to 68*, was of low toxicity. The confusion existed In his findings that Aroclor 125** which is the diphenyl chlorinated to only was considerably more, toxle on Inhalation. We did not supply him with this material, and I was never convinced that some error might not have been made In the < sample. . At any rats, we have adslsed protection against all Aroclor fumes when an elevated temperature Is used. I will appreciate It if you will let me know the result of your Investigation, If one le to be made. Very truly yours HFKtrg B CCi Hr. Paul Benlgnus St. Louis R. Fnmet Kelly, M.D. Medical Director Ml1678 WATER_PCB-SD0000017727