A forklift operator and two spotters were removing a 600-pound pump from a paper machine's virgin pulper. The pump was being lifted by nylon straps, attached to the tines of the forklift, when it became stuck on a pipe flange. The pump disengaged from the housing and started to swing, striking one of the spotters twice in the right leg. The employee received a laceration to the right thigh and another to the right knee, and was hospitalized.