Roura Material Handling Roura Material Handling produces dumping hoppers for a number of industries with many different utility and purpose. Our main products are the standard self dumping hoppers which includes durable, rugged, ultimate and behemoth hoppers. We also provide custom and specialty hoppers. Along with these, we are also specialized in supplementary products comprising rotator boxes, stone products, release system and other parts or options. With our engineering and sales staff, you can design your dumping hopper that will perfectly suits your business needs.