1. Graduate Student, Div. of Engineering, Colorado School of Mines, 1500 Illinois St., Golden, CO 80401 (corresponding author).
2. Adjunct Lecturer, Div. of Engineering, Colorado School of Mines, 1500 Illinois St., Golden, CO 80401.
3. Professor, Div. of Engineering, Colorado School of Mines, 1500 Illinois St., Golden, CO 80401.