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Chevron Corp., the second-largest U.S. energy producer, said its oil refineries returned to profitability during the first three months of this year as margins earned from processing crude into fuels widened.
Production of fuels such as gasoline and diesel at plants in California, South Korea and Thailand rose during the January-to-March period, Chevron said Thursday.
Chevron said its plants lost almost $6.7 million a day in the fourth quarter.
Denver Post staff and wire reports
