Abstract: There is disclosed a mobile cargo container for transporting fluid-like materials such as cannery waste. The cargo container includes a floor conveyor extending rearward of and beyond the container bottom for discharging materials from the container through a rear discharge outlet. A trailer door is connected to the container to pivot between an open position wherein the door is above the discharge outlet, and a closed position wherein the door seals the container in a fluid tight fit. The discharge outlet is defined by side walls of the trailer which are angled downwardly in a rearward direction from the top of the container to a point wherein the side walls project downwardly in a forward direction to meet with a bottom portion of the container.