...through mediation or the other procedures prescribed by the Act, and should, in the Judgment of the Mediation Board, threaten to interrupt Interstate...Board shall notify the President, who may thereupon at his discretion, create an emergency board to investigate and report to him respecting such dispute....

...foregoing provisions of this Act and should, in the judgment of the Mediation Board, threaten substantially to interrupt interstate commerce to a degree such...the country of essential transportation service, the Mediation Board shall notify the President, who may thereupon, in his discretion, create a board to...

...section 10 of the act when the Board notifies the President that a dispute threatens substantially to interrupt interstate commerce to a degree such...section of the country of essential transportation. The President may, in these circumstances, in his discretion, create an emergency board to investigate...

...foregoing provisions of this Act and should, in the judgment of the Mediation Board, threaten substantially to interrupt interstate commerce to a degree such...the country of essential transportation service, the Mediation Board shall notify the President, who may thereupon, in his discretion, create a board to...

...place, however, only if both consent. If arbitration is rejected and the dispute threatens substantially to interrupt interstate commerce to a degree such...section of the country of essential transportation services, the Mediation Board shall notify the President who may create an emergency board to investigate...

...deal with this type of situation. When, according to the act, a labor dispute "threatens substantially to interrupt interstate commerce to a degree such...the country of essential transportation service," then the President is empowered to extend the agreements in place and appoint an emergency factfinding...

...arbitration if there is still no agreement. After all these steps and if the dispute threatens substantially to interrupt interstate commerce to a degree such...section of the country of essential transportation services, the Board has a statutory requirement to notify the President, who may, in his discretion,...

...772-773; see also Chicago & NW R. Co. v. Transportation Union, 402 US 570, 581-582 (1971). » rupt interstate commerce to a degree such as to deprive...the country of essential transportation service, the Mediation Board shall notify the President,' who may create an emergency board to investigate and report...

...foregoing provisions of this Act and should, in the judgment of the Mediation Board, threaten substantially to interrupt interstate commerce to a degree such...the country of essential transportation service, the Mediation Board shall notify the President, who may thereupon, in his discretion, create a board to...

...section 10 of the RLA, the NMB believes that any such continuing dispute "threaten[s] substantially to interrupt interstate commerce to a degree such...the country of essential transportation service," it may recommend to the President that an Emergency Board be appointed. Based on the NMB's finding,...