Abstract: A conveyor assembly comprises a main conveyor and a boom conveyor. A mounting is pivotally connected at the discharge end of said main conveyor for movement about a transverse axis relative to said main conveyor, said mounting having a rotatable support on which the boom conveyor is mounted for pivotal movement laterally. A linkage retains said mounting in a horizontal position extended outwardly beyond said discharge end with said rotatable support upright. The support has an attachment device at its upper end providing for pivotal connection about a transverse axis of said boom conveyor for movement thereof in a vertical plane, the boom conveyor being supported by a length-adjustable tie from said mounting. The linkage comprises a series of interconnected pivotal links between said mounting and said main conveyor to provide for synchronized adjustment of the mounting to maintain the support upright on alteration of the inclination of said main conveyor.