Our Soil Sifter 2.0.  This is a major improvement on Soil Sifter 1.0 which needed two people, one to shovel and one to push the rocks down with a rake because the angle was not steep enough. A little innovation just freed up one person to do something else.  The pile we are shovelling from is a pile of composted horse manure mixed with soil and rocks, and we’re removing all the rocks.