Abstract: The present invention relates to a mobile material handler useful for transferring dry, powdered, bulk material from a flat surface to a truck load-out bin, a silo, or another receptacle. More particularly, the invention relates to a mobile material handler having fluidizing means to aerate and to fluidize the material which is received in an open end of the frame of the material handler. The fluidized material flows to the inlet means of a vacuum-pressure pneumatic conveyor which is also mounted to the frame. In a bulk material warehouse and transfer system, material is stored on the generally planar floor of a large warehouse. Within the warehouse, a mobile material handler is moved to transfer dry, bulk, powdered material from the warehouse to a remote truck load-out bin or other receptable.