What role does fact finding play in the arbitration and mediation process between labor and management

Mediation is the process of two conflicting groups coming together to find a middle term. It is at times the negotiation with the difference and it is normally supervised by a person in authority who oversees and leads the processes.  If the mediation fails them the conflict is placed under arbitration.  The process of arbitration is fully directed by an arbitrator who has same powers as the judge but is limited to the conflict that is being solved. The arbitrator is there to impose a final decision or come up with the resolution to the conflict in the fairest way. He should follow justice after listening to both conflicting side. The arbitrator is not there to find the middle term to be agreed by the two sides.