This section applies to a dispute only if the employer involved in the dispute has at least 10 employees. Whenever a disputant or other reliable source informs the Mediation Service that a dispute might result in a lockout or strike, the Mediation Service: may investigate and try to mediate the dispute; and if the Mediation Service is unable to mediate, may try to obtain the consent of the disputants for formation of a board. Whenever the Mediation Service is unable to mediate a dispute and a disputant refuses consent for formation of a board or for arbitration by the Chief Mediator, the Mediation Service shall investigate thoroughly the cause of the dispute. In an investigation under this subsection, the Mediation Service may depose a disputant. After an investigation under this subsection, the Mediation Service: shall decide which disputant is mainly responsible or blameworthy for continuance of the dispute; and over the official signature of the Commissioner or Chief Mediator, shall publish in a daily newspaper a report that assigns responsibility or blame for the continuance of the dispute.