1. Department of Civil Engineering and Construction Engineering Technology, Trenchless Technology Center, Louisiana Tech University , 600 Dan Reneau Drive, Ruston, LA, USA
2. Department of Civil Engineering and Construction Engineering Technology, Director, Trenchless Technology Center, Louisiana Tech University , 599 Dan Reneau Drive, Ruston, LA, USA
3. Trenchless Design Engineer, Stantec , Edmonton, AB, Canada
4. U.S. Environmental Protection Agency , Edison, NJ, USA
5. Battelle Memorial Institute , Columbus, OH, USA
6. Rehabilitation Resource Solutions , Hilliard, OH, USA
7. Trenchless Opportunities , Peterborough, UK