1. Oryx Energy Company, P.O. Box 2880, Dallas, Texas 75221-2880. Emails:
2. Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185-1109.
3. Center for Lithospheric Studies, The University of Texas at Dallas, P.O. Box 830688, Richardson, Texas 75083-0688. Emails: