Abstract: The apparatus comprises a bulk container having a discharge opening in its base, and vibratory tray feeder for conveying material from the discharge opening of the container to a second discharge opening. The tray feeder has an inlet connected to the discharge opening of the container by a flexible portion. To assist the passage of the material from the container to the tray feeder, the tray feeder is vibrated in a manner which transmits vibrations through the flexible portion of the connecting means to the container. The container may be a fixed container or part of a mobile unit in which the container and the tray feeder are supported on the same frame.