1. Department of Civil and Environmental Engineering; Colorado School of Mines; Golden Colorado USA
2. Department of Earth, Atmospheric, and Planetary Sciences; Purdue University; West Lafayette Indiana USA
3. Southwest Research Institute; Boulder Colorado USA
4. Department of Chemistry and Geochemistry; Colorado School of Mines; Golden Colorado USA
5. Department of Geological Sciences; Brigham Young University; Provo Utah USA
6. Department of Civil Engineering; Texas Tech University; Lubbock Texas USA