The method of unloading provides for unloading of a cargo container without having to tip the container up on its end to cause a gravity flow. The method provides for placing a liner on the floor of a cargo container with side walls, front wall, ceiling and back opening. Suspending a bulkhead at the rear opening of the container from an upper portion of the container so it does not depend upon the floor for support. Placing a cargo within the container on the liner. Removing a bottom portion of the bulkhead and attaching an end of the liner located at the back opening to an unloading apparatus which has been detachably connected to the rear of the container, and then pulling the liner out, and as the liner is pulled out, the cargo on the liner is unloaded from the container.