Marathon warns that rally in natural gas prices may hurt profits

MOSCOW (MRC) -- Marathon Petroleum Corp signaled on Tuesday that a sustained rally in natural gas prices could take a toll on earnings, sending the largest US refiner's shares down 4%, according to Hydrocarbonprocessing.The warning comes after US natural gas prices soared more than 60% in the third quarter - translating into higher costs since natgas is used to power refining operations

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