Three types of face belt joints are used: (1) hinged-plate type, which is attached to the belt by means of copper rivets and interconnected by means of pins; (2) wire-hook joints, the most popular type--the hooks are inserted by means of a hand-operated machine and are connected by a flexible steel pin; and (3) spliced joint, in which a portion on each side of the belt is cut away so as to provide a splice, and this is secured by cramped-type pins, which are inserted and knocked over by hand.