FILE - In this Feb. 20, 2001 file photo, a PuriNOx technician holds a sample of the fuel additive at the Lubrizol Corp. research lab in Wickliffe, Ohio. Warren Buffett's Berkshire Hathaway Inc. is ... more 
FILE - In this Feb. 20, 2001 file photo, a PuriNOx technician holds a sample of the fuel additive at the Lubrizol Corp. research lab in Wickliffe, Ohio. Warren Buffett's Berkshire Hathaway Inc. is buying specialty chemicals company Lubrizol Corp. for about $9 billion in cash Monday, March 14, 2011, making it one of the biggest acquisitions in Berkshire's history. less 
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Associated Press | Photo By Mark Duncan, file
Mon, Mar 14, 2011 7:23 AM EDT