Document b59E1rr8yZ2YpxRjGvmDBe1X6

bcc: Mr. D. P. Smith - St. Louis Mr. J. P. Lonsberg-Detroit June 9, 1959 Mr. w. G. Arnholt Purchasing Agent Central Foundry Division General Motors Corporation Saginaw, Michigan Dear Mr. Arnholt: Your letter to our Detroit office concerning Pydraul A-200 has been referred to re. Pydraul A-200 is a compound which is formulated from various materials, the composition of which I am unable to give you. The precautions to be observed in using this .material are simply to avoid prolonged or repeated inhalation of the furies when released at elevated temperatures. We have proven by toxicological investigations that if a rupture of the line occurs and the material hits a hot surface, it is quite safe for an individual to remain in that atmosphere for a sufficient period of time to turn off the machine and stop the flow of Pydraul. Exposure to the material at room temperatures will not occasion any hazard. The material should not be allowed to remain in contact with the skin, but should be removed by washing. If you have any further questions, please let me know. Very truly yours. REKjph R. Emmet Kelly, M. D. Medical Director DSW 586054 STLCOPCB4091388