Appointment of a Commission by the Secretary

Section 129. Appointment of a Commission by the Secretary.--The secretary may, at his discretion, appoint a commission for the purpose of investigating any question within the purview of this act to enable him to make a decision in accordance therewith: Provided, however, That it shall be mandatory that the secretary appoint a commission for the purpose of an investigation wherein such action is required in any of the provisions of this act.