Pittsburgh-based USX Corp. said it expects to...

Pittsburgh-based USX Corp. said it expects to take a charge against fourth-quarter earnings to reflect the decline in value of oil inventories at its Marathon Oil subsidiary. Spokesman William Hoffman said USX officials anticipate an adjustment to the value of the inventories because of falling oil prices, but he added that a precise figure was not available. A New York brokerage predicted that the writedown would amount to $80 million. Industry analyst Frederick Leuffer of C. J. Lawrence estimated that the writedown would cut 35 cents per share from earnings he had previously expected to be 74 cents for the quarter.