Abstract: A conveyor is provided for use in an irradiation cell to transport goods to be irradiated past a radiation source panel. The conveyor has a plurality of irradiation conveyor lines parallel to the source panel, which "parallel" lines are independent of each other. Transfer conveyor lines, perpendicular to the alignment of the "parallel" conveyor lines and the source panel, and located outwardly of the ends of the source panels and crossing the extended paths of the irradiation conveyor lines, are provided for transferring goods to be irradiated to the parallel conveyor lines and for permitting direct exposure of two sides of goods to the same panel.