Robert KoernerDr Robert Koerner is a Professor Emeritus at Drexel University, and founded both the Geosynthetic Research Institute (GRI) and the Geosynthetic Institute (GSI). He served as director until recently when his son George rose to that position. Bob has forty years’ experience in the field of geotextiles, and has authored and co-authored over two hundred journal papers and book chapters on the topic. Read More Read Less