Whenever a strike or lockout occurs or is seriously threatened and it comes to the knowledge of the board, a panel of said board, as directed by its chairman, shall proceed as soon as practicable to the locality of such strike or lockout, put itself in communication with the parties of the controversy and endeavor by mediation to effect a settlement of such strike or lockout; and may inquire into the causes of the controversy and may subpoena witnesses and send for persons and papers.
(1949 Rev., S. 7386; 1949, S. 3030d.)
Cited. 163 C. 327; 171 C. 613; 200 C. 91.