Kerr-McGee Headquarters

Kerr-McGee Headquarters

Paul Hellstern/ Bloomberg

Kerr-McGee Corp. headquarters are seen in Oklahoma City, Oklahoma. A judge yesterday held Anadarko and its Kerr-McGee unit liable for environmental cleanup and damages in a case in which the U.S. government had sought $25 billion to restore polluted sites and compensate 8,100 claimants.