1. Research Scientist, Recycled Material Resource Center (RMRC-3G), Univ. of Wisconsin–Madison, Madison, WI 53706 (corresponding author).
2. Professor Emeritus and Director, Recycled Material Resource Center (RMRC-3G), Univ. of Wisconsin–Madison, Madison, WI 53706.
3. Wisconsin Distinguished Professor, Director of Sustainability Research and Education, and Chair of Civil and Environmental Engineering and Geological Engineering, Univ. of Wisconsin–Madison, Madison, WI 53706.