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Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX. Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX. Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX.
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Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX
Stephen C. Ruppel, Bureau of Economic Geology, 2003 UL/PTTC Workshop, Midland, TX