1. Associate Professor, Montana Bureau of Mines and Geology, Montana Technological Univ., Butte, MT 59701 (corresponding author). ORCID: .
2. Dean, School of Engineering, Univ. of Virginia, Charlottesville, VA 22903. ORCID: .
3. Professor Emeritus, Geological Engineering, Univ. of Wisconsin-Madison, Madison, WI 53706.