AbstractThe process of commodity grading is carried on to provide market opportunities, or to meet other market criteria. Grading systems also, however, have a cost to those who market a product. This study focuses on the interrelationship among the Canadian grain grading system, the operations of terminal grain elevators at Vancouver, and problems arising from these interrelationships. Evidence indicates the grain grading system affects throughput of the terminal elevators at Vancouver. The present system of grading wheat in Canada slows terminal throughput through delays in unloading, changes to equipment for grain cleaning, and by reducing usable storage space.