1. National Energy Technology Laboratory, U.S. Department of Energy, P.O. Box 10940, Pittsburgh, Pennsylvania 15236, Department of Geological Sciences, Indiana University, 1001 East 10th Street, Bloomington, Indiana 47405, Salem State College, 352 Lafayette Street, Salem, Massachuetts 01970, and ALCOA Technical Center, 100 Technical Drive, Alcoa Center, Pennsylvania 15069-0001