Document dnJ9wJ45VZJEVbDXaryLE0ED5

INTER-OFFICE CORRESPONDENCE Et hyl Gasol ine Corporat ion Chic ago Of f ic e . 310 So ut h Mic hig an a v e nue Chicago, Il l inois April 3, 1939 Br. W. F. Machie, Dear Dr. Machie: Vie are shipping as of this date a sample of sludge from Texas Company's tank Ho. 2179 at their Lockport refinery. This tank was in Ethyl blending service until a number of years ago when it was removed and placed in service as a run-down tank, without having been cleaned during the change-over. Your copy of the tank history record on this tank is complete and gives you full information. The sludge in the bottom of the tank was piled up to a depth of eighteen inches at some points and was also to a depth exceeding the height of the suction spider in the tank. Naturally, being in service as a run-down tank ac counts for the excessive accumulation of sludge. C:J cc: Mr. 0. B. Lewis B. G. Crane Safety Engineer K 001763-4