United States of America v. Citation Oil & Gas Corp, and Citation 1994 Investment Limited Partnership
United States of America, State of Louisiana, State of Ohio, Oklahoma Department of Environmental Quality v. Chemtrade Logistics, Inc., Chemtrade Refinery Services Inc., Marsulex, Inc.
United States of America v. Cabot Corporation, KB Alloys, LLC, E.I. Du Pont De Nemours and Company, Shieldalloy Metallurgical Corp., International Wire Group Inc., and Omega Wire, Inc.