Document vn0BqDKR0a9vajRb4RO7pKpw

October 3, 1924. Dr. Koyal- Keeker, ' Department of Labor and JLndustry, Harrisburg, Pennsylvania. Dear Dr. Meeker: - The lead tetra-ethyl matter is a difficult one. During the progress of our lead work we became aware of the,fact that this substance would soon be marketed. It struck us as a possible source of danger and we made a few tests on it. We were asked by the General Motors Corporation to go into the matter in detail, but we did not feel that the Investigation was one which we cared to approach. Subsequently the Bureau of Mines undertook a comprehensive investigation for the General Motors Corporation at their Station at Pittsburgh under Yant. s ' This work is now going on, and my brother and Dr. Aub visited it and feel that a thorough test .is being made. It is, therefore advisable for you to get in touch with Yant and get some of the details of their work, since we are not in a position to express any opinion whatsoever, if s'; >< : fe. * Very sincerely yours, Cecil K. Drinker, M.D.