An agricultural combine including an unloading system wherein an unloading conduit assembly is, in an operational set-up, rotatable or swivelable through an arc of 360° to permit grain unloading into a grain truck located at any point around the combine, whether the combine is stationary or moving. For road travel or storage the unloading conduit assembly, or some portion of it, is pivoted into a set-up wherein the longitudinal conduit is retracted into nesting relationship against the side of the combine and below the top of the grain tank.