BOSTON (Nov. 20)—U.S. and European antitrust authorities have initiated a joint investigation into alleged price-fixing within the carbon black industry, according to Cabot Corp., one of the companies asked to provide documents. As part of this procedure, European antitrust authorities are reviewing documents at Cabot's European headquarters in Suresnes, France, and U.S. authorities have contacted Cabot's Boston headquarters. Cabot said it "takes its compliance responsibilities seriously and is cooperating fully with the investigation. Neither Cabot nor its employees has been charged with any wrongdoing."