Norman Wardlaw, Department of Geology and Geophysics, The University of Calgary, is internationally recognized for his pioneering studies of the geochemistry of salt and potash deposits and for his innovative work on the flow of oil, gas and water in petroleum reservoirs. He has carried out ground-breaking research on the geometric properties of pore spaces in reservoir rock, and has adapted image analysis techniques for the study of complex interactions of three fluids moving in pore spaces. His work is being used for predicting amounts and rate of oil and gas reservoir recovery and the design of optimum recovery systems. The work also has applications to the transport of pollutants in groundwater, a problem of profound world-wide significance.