  We consider through simulations the behavior of elongated grains on a
vibrating ratchet-shaped base. We observe differences in layer velocity profile
and in net grain velocity for grains that are composed of one, two, or three
colinear spheres. In the case of mixtures of different species of grains, we
demonstrate layer-by-layer variation in the average velocity as well as layer
segregation of species, and show that horizontal separation of the species can
be achieved using this geometry. We also find that the addition of a small
number of shorter grains to a sample of long grains provides a lubrication
effect that increases the velocity of the long grains.
