Affiliation: | Research Assistant Professor, Civil Engineering, Colorado State University, Fort Collins, Colorado 80523.;Research Associate, Civil Engineering, Colorado State University, Fort Collins, Colorado 80523.;Associate Professor, Earth Resources, Colorado State University, Fort Collins, Colorado 80523.;Geologist, U.S. Geological Survey, Denver, Colorado 80200.;Professor, Civil Engineering, Colorado State University, Fort Collins, Colorado 80523. |