Document rxvaJBY53bqkD3Bk75Yppo93V

THE ASSOCIATED ETHYL COMPANY LIMITED 5 JO < 2 (B i&Kfe5f/N. GRUBB (U.S.A.) -BOYLE 1 UL.'W.' M'fC'PrU'CT-W-gT) .HEATH EVES R.W.SELLERS . GASS A. J . S INGLETON . HAMILTON (U.S.A) E. E . SOUBRY .AUG.KESSLER (DUTCH') E.W.WEBB (U.S.A) T. R.-A. SEVAN, MANAGING DIRECTOR Address all communications until further notice to OUR REF.^/'^ YOUR REF. THAMES HOUSE, MIEMANK, EOMHOM, S.W.l Inland Telegrams: Etkylport* Sowest London Telephone: Victoria 1802 (4-Zmes) 13th November, 1939, .Dr. R. A. Kenoe, (Dept, of Physiology), College of medicine, University of Cincinnati, Cincinnati, Ohio, U.S.A. \ Dear Dr. Eehoe, Cleaning of Storage Tanks. Colonel Thenau.lt has jus, t reported to me an * <** recently observed at the Standard refinery at Port Jerome. He noticed that a storage tank was being cleaned and the men mere working on the walls above the floating roof which was at its lowest position. Colonel Thenault reports that the men were wearing the complete regulation clothing but were not using air line gas masks. He says "instead they had a hood, with eye glasses and a kind of filter opposite the mouth. It is a contraption used in lead oxide industries". I would appreciate, your views on this matter and just wondered whether it would be permissible to adopt this-method, say, with an approved canister mask, the canister of which embodied a "particulate" filter as well as an activated charcoal bed. ' In this case at Port Jerome Colonel Thenault reports quite definitely that when the men were working below the roof they were equipped with the air masks, but it was ratherndifficult to transfer the apparatus to the open space when they were working on top of the roof. Yours very truly,