A conveyor in which the carrying medium is a series of steel plates, each in the form of a short trough, joined together with a slight overlap to form an articulated band. The plates are attached either to one center chain or to two side chains. The chains connect rollers running on an angle-iron framework and transmit the drive from the driveheads that can be installed at intermediate points as well as at the head or tail ends. A plate conveyor can negotiate bends down to about 20 ft (6.1 m) radius; available in widths 400, 540, and 640 mm with running speeds from 3 to 4 ft/s (0.9 to 1.2 m/s) with a carrying capacity from 100 to 400 st/h (90.7 to 362.8 t/h).