Kerr-McGee Corp. (KMG) has announced a distribution of Class B common shares of Tronox, Inc. (“TRX.B”).  The distribution ratio will be approximately 0.20 share of common stock of TRX.B for each one share of common stock of Kerr-McGee Corp. The ex-distribution date is Friday, March 31, 2006. This corporate action will be coordinated with the Options Clearing Corporation.