James K. Mitchell, ScD, Dist.M.ASCE, NAE, NAS (1930-2023) was Emeritus Cahill Professor of Civil Engineering at the University of California, Berkeley, and Emeritus University Distinguished Professor at Virginia Polytechnic Institute.

Kenichi Soga, PHD, NAE, FREng, FASCE, FICE is Donald H. McLaughlin Chair in Mineral Engineering and Distinguished Professor at the University of California, Berkeley.

Catherine O'Sullivan, PHD, FIEI, FICE is Professor of Particulate Soil Mechanics in the Department of Civil and Environmental Engineering at Imperial College London.