Exxon Mobil's quarterly profits tumble on poor refining and chemicals results CNBCExxon's 1Q profit tumbles 49% partly on higher spending Yahoo FinanceExxon profit tumbles with refining business under pressure Financial TimesExxon Mobil's first-quarter profit misses estimates on lower oil, gas prices Yahoo FinanceExxon Delivers Refining `Shocker' With Worst Loss in 17 Years Yahoo FinanceView full coverage on Google News