Abstract: The improved assembly includes a truck having a generally horizontal trailer frame supported on rotatable wheels. The upper surface of the frame preferably includes a dished portion adapted to receive the assembly's open-topped, curved container bin, and also includes spaced rollers rotatably supporting the bin above the bottom surface of the dished portion. An upwardly directed tilt link is pivotally connected to at least one end of the frame adjacent one side thereof and to the upper end of the bin adjacent the opposite side thereof. A ram, preferably hydraulic, is pivotally connected to the side of the frame at a point remote from the tilt link and extends upwardly to pivotally connect to the upper part of the bin. If desired, a pair of tilt links can be used at opposite ends of the frame, with the ram spaced therebetween. During extension of the ram, the bin initially rotates on the rollers, without lateral displacement, enabling side loading from low slung bucket arms.