The Retriever is a road shoulder tool that efficiently conditions the shoulder material for reuse on the road surface. The Retriever mulches and separates the road side vegetation from the existing gravel and then moves it to the road surface. On paved roads the Retriever will bring back the shoulder material to fill in the edge rut, leaving the perfect safety edge with no vertical drop. The Retriever can mount to a tractor three point hitch or to a road grader. Retriever LLC has developed a new postless lift assembly the mounts the Retriever to the front of the motor grader.