Document N27kyDvXB13MwLgVdOQbv28gR

March 12, 1943 Mr. 0. E. Bowes Director of Research Ovens-Illlnola Glass Company Tolodo, Ohio Dear Hr. Bovs a: Thant you very nuch for your further information on the composition of your synthetic insulating material. I an disappointed to hear that vhat we thought to. be synthetlo asbestos proved to be ohryeotile whloh had been add^d as a reenforcing agent. Tbe fact that you are starting with a mixture of `crjuartz and asbestos would certainly suggest that you hcve all the ingredients for a first class hazard. However, the particle size of the fcmer will, of course be determined.. The asbestos nay or nay.not be in such fora ae to be Inhalable. Ve ourselves, will be able te get rid of the matrix I think ao chat ve con determine the particle size of the Quartz. 1 would exticate that the cost of malting the pre liminary testa and particle size determination and so on vould not exceed $300. Vith this information in hand, you can then decide whether you care to go into an experiment of a larger scale for which our charge ie $5,000 for the first year and lees in the succeeding onee as the number of animale to be kept under observa tion decreases. approval. I trust that this suggestion may meet with your Very truly yours. LUG:R3B Leroy U. Oardner, M. D. Director 42 016 0712