Abstract: An upright post is affixed to a vehicle body adjacent a corner of that body. An elongated extensible support strut is mounted at one end in swivelled relation adjacent the bottom of the post. An elongated tube is mounted adjacent the upper tube end in swivelled relation to the upper end of the post. The tube is pivotably attached adjacent its lower end to the other end of the strut so that the tube and strut can swing about the post and towards and away from the post. Conveying means are mounted inside the tube to convey particle matter from the lower end to the upper end of the tube. A hopper is mounted adjacent the lower end of the tube and in particle flow communication with the conveyor. A discharge spout is mounted at the upper end of the tube in particle flow communication with the upper end of the conveyor.