Document Z4pJ62ExN5k6Kz08pgmgp5818

January 4, 1961 Barnard and Burk* Inc. Consulting Engineers 10Z3 Nicholson Drire Baton Rouge 2, Louisiana Gantlaman: As you know, our anginaaring agraamant with yam dated January 22, I960 will expire an Dacambar 31. I960 and wa ara desirous of extending it, without any change, for another year, expiring on December 31, 1961. If this renewal is acceptable to you, will you kindly sign and date the enclosed copy of this latter and return it to me. Very truly yours, ETHYL CORPORATION y. A. C. Burdick, Jr. Chief Engineer ACCEPTED BARNARD AND BURK, DCC. By f/s *? $ Data 'j !rj U 1 P-0861 1