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* Federal investigators found no evidence that oil companies conspired to gouge Midwestern motorists last summer, when pump prices in Chicago, Milwaukee and other cities rose above $2 per gallon. Investigators also concluded that the decline in gasoline prices after June was unrelated to the Federal Trade Commission’s inquiry. The FTC investigation “uncovered no evidence of tacit or explicit collusion among market participants,” the agency’s chairman, Robert Pitofsky, wrote Rep. W.J. “Billy” Tauzin (R-La.), chairman of the House Energy and Commerce Committee.

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Lockheed Martin Corp. said it named Controller Christopher Kubasik as chief financial officer. Kubasik, 39, replaces Robert Stevens, 49, who was named president and chief operating officer in October. No successor has been named for controller.

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