A load-handling device for loading and/or unloading a load of wood material comprises at least one boom (9), at least one handling means of wood material arranged to said at least one boom (9) for picking wood material to be supported by the handling means of wood material and the boom (9) for transferring wood material by using the boom (9) and said handling means of wood material and at least one first control device (17) for controlling the use of the boom (9) and/or the handling means of wood material. The load-handling device further comprises at least one nozzle (19) arranged to the boom (9) and/or handling means of wood material, at least one flow channel (20) connected to the nozzle (19), via which, the nozzle (19) is connectable to at least one pressure source (21) for feeding a pressurized fluid flow via the flow channel (20) to the nozzle (19) for feeding the fluid flow out of the nozzle (19), and at least one second control device for controlling the use of the fluid flow.
