Lehman Brothers 2008 CEO Energy/Power ConferenceStephen I. ChazenSeptember 3, 2008
UBS Global Oil & Gas ConferenceStephen I. ChazenMay 20, 2008
2008 Annual Meeting PresentationDr. Ray R. IraniMay 2, 2008
Howard Weil Energy ConferenceStephen I. ChazenApril 8, 2008