The invention relates to an open top generally rectangular hopper for the delivery and discharge of a flowable material. The hopper has lower side walls which converge inwardly and downwardly and are joined to a bottom plate. The hopper also has a bracket mounted on the exterior of the back vertical wall for securing the hopper container to the arm of a transport vehicle. A discharge chute is located on the lower portion of the front vertical wall about equidistant between the downwardly and inwardly converging lower sidewalls. In certain embodiments, an anti-spill lip surrounds the perimeter of the hopper opening and is angled between 30° to 90° inwardly from the vertical walls.