Document NeaGrM5n0aQyKG31v0wooMNQp

/ LABORATORY OF APPLIED PHYSIOLOGY UNIVERSITY OF CINCINNATI COLLEGE OF MEDICINE GENERAL HOSPITAL July 18, 1940 Kr. 0. B. Lewis Ethyl Gasoline Corporation Chrysler Building New York, New York Dear Oscar: In reply to your letter of .Tuns 14, the question of whether or not a lead hazard exists for workmen who work on the top of floating roofs in the down position, depends upon the extent of the contamination of the scvie and sludge with organic lead and the extent of the ventilation. If air is still and ven tilation so poor that a fire and explosion hazard exists in the location, then a hazard from the volatile lead compounds will also be present. Very truly yours, iWi: vr Willard Machle, iU D. cc - Mr. Harry Kaley KE 0022568