Apparatus for removal of granular material from laterally spaced rows of containers having discharge ports whose lower edges are on a level with each other. A conveyor is in the space between the rows of containers substantially on a level with or slightly below the lower edges of the discharge ports. A tubular housing encloses the conveyor provided with inlet ports in its upper wall corresponding to the discharge ports of the containers and has an outlet orifice at the end of the conveyor. Sheet members bridge the gaps between the lower edges of the discharge ports and the adjacent edges of the upper wall of the tubular housing to form a roof of a chamber which is connected to the pressure side of a fan. There are slits in the sheet members providing upper orifices facing away from the discharge ports whereby the air current discharged from the chamber through the orifices will tend to move the material emerging from a discharge port towards the corresponding inlet port of the housing.