Professor Koenders (FIMA, CMath), MInstP, CPhys, (CSci) has a background in theoretical physics, notably in statistical mechanics. He has expertise in the theory of fluctuations in continuum mechanics, and much of his work has been concerned with developing the micromechanical basis for the behaviour of dense granular media including elastic-frictional densely packed material and slurry flows. Assisted by funding from the Dutch Government, the US Air Force, industry in the UK and overseas, as well as EPSRC, he has been able to apply the theoretical techniques to erosion flows in geotechnical filters, the characteristics of densely packed media, the cake formation process in filtration, and a number of contributions to geophysical flows. His cross-disciplinary interests are enhanced by numerous collaborations both in the UK, the USA, and in Europe. He has contributed some 100 scientific publications on topics in mechanics.