Anadarko Petroleum Corporation, Anschutz Foundation, Elizabeth
and Stephen Bechtel Jr. Foundation, BP, Burlington Resources,
CGG Americas Inc., Conoco Inc., Devon Energy Corp., Dominion Exploration
& Production, Inc., Equitable Production Co., Five States
Energy Co., Forest Oil Corp., Furgo South Inc., Glynn Geotechnical
Engineering, Halliburton Foundation, Noble Drilling Corp., Ocean
Energy, Inc., Optimistic Oil Co., Parker Drilling, Petrotechnical
Open Software Corp., Phillips Petroleum Corp., Schlumberger Foundation,
Shell Oil Co. Foundation, Southwestern Energy Production Co.,
Stone Energy Corp., Subsurface Consultants & Associates, Texaco
Foundation, Texas Crude, Inc., Thomasson Partner Associates, Unocal
Foundation, USX Foundation (Marathon Oil Co.), Vulcan Materials
Co., Western Gas Resources, Williams Production Co.
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