Excavator riddle chain bucket - GIF

[marksbug]

yes frank, but somebody said it would be good for separating different size rocks too I would think it would need some agitation to do that possiably a good amount as I have tried it at hole a few times and it just dont seem to work....with some movement of the stones some times a lot of harsh movement. a round tramil would probably work best and sort them pretty good into different piles. it takes a good amount of movement to separate dirt from stones as well.