A worker climbed onto an I-beam to clean muck off the tail pulley of a conveyor
belt attached to a separator. While the conveyor system was energized and in
operation, the employee reached between the feed and return of the belt in front
of the tail pulley with his hand to brush the muck off the belt. He was caught by
the moving belt and his hand and arm were pulled into a pinch point in the tail
pulley causing a fracture his arm. What type of event is this?