Document 9R33LyRD02mpydOBO5OXz0oq

July 2k, W5k Dr* Graham Edgar Ethyl Gasoline Corporafelon Chrysler Building Hew York City Hew York tDear Edgar . Recent difficulties with weigh tanks as a result of the accumulation of sludge hare necessitated the opening and repainting of tanks From the condition of the one at Cloves Ohio, which I saw this morning, it would appear that there wore _ at least several inches of sediment In tho bottom, ' an accumulation which sooner or later would lead to the necessity of cleaning,. We would appreciate getting any ideas you may have on the technique of cleaning* and preparatory procedure for the conversion of the lead to Inorganic-compounds* As I recall, some figures that Johnny Schaefer obtained following tank ear cleaning, indicated significant? amounts of lead even following - forty-eight hours steaming with exhaust steam used in conjunction with sulfuryl chloride* As there is no lower vent on the weigh tank, the cleaning will be quite a problem, particularly so as it Is next to impossible with the present equipment to suck out the fluid which is held in with the deposits* Very truly yours, mMiis- W & fiar d ' F *' ' liao f i l e , " * xe 0015517