Accurate estimation of shape-related parameters are important for determination of termi- nal velocity, drag coefficient, and Reynolds number. It is also important to know the shape before any heat or moisture transport analysis can be performed. Sphericity is defined as the ratio of the surface area of a sphere, which has the same volume as that of the solid. to the surface area of the solid. Roundness of a solid is a measure of the sharpness of its comers and is defined as the ratio of the largest projected area of an object in its natural rest position to the area of the smallest circumscribing circle(Cumay, 1951). Higher values of city and roundness indicate that the object's shape is closer being spherical. Cur ray(1951) suggested the following relation for calculation of sphericity and roundness of the grain