...this thirty-day period does not guarantee the release of the parties for economic action. If a dispute threatens "substantially to Interrupt Interstate commerce to a degree such as to deprive any section of the country with central transportation services," the NMB will notify the President...

...establishment of an Emergency Board: "Namely, that a strike" — and I quote from that determination — "threatens substantially to interrupt interstate commerce to a degree such as to deprive any section of the country of essential transportation service." If that determination was valid in...

...judgment of the National Mediation Board, specific circumstances surrounding this dispute threatened substantially to interrupt interstate commerce to...section of the country of essential transportation services. Accordingly, consistent with the statutory scheme, the President was promptly so notified....

...voluntary binding 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 as to deprive any section of the country of essential transportation services, the Board has a statutory requirement...

...not heretofore been adjusted under the provisions of the Railway Labor Act, as amended; and WHEREAS the dispute, In the judgment of the National Mediation...interstate commerce to a degree such as to deprive the country of essential transportation service: NOW, THEREFORE, by virtue of the authority vested...

...notified the President that the disputes between the railroads and the unions threatened to substantially interrupt interstate commerce to a degree such as to deprive a section of the country or sections of the country of essential transportation services. The President issued, on May 3, 1990,...

...heretofore been adjusted under the provisions of the Railway Labor Act, as amended; and WHEREAS this dispute, in the judgment of the National Mediation...threatens substantially to interrupt interstate commerce within the State of Pennsylvania to a degree such as to deprive that portion of the country of essential...

...strike. The National Mediation Board has concluded that the situation is extremely critical and that it threatens substantially to interrupt interstate commerce to a degree such as to deprive various sections of the country of essential transportation service. The Department of Transportation...

...under the foregoing provisions of this Act and should, in the judgment of the Mediation Board, threaten substantially to interrupt interstate commerce to a degree such as to deprive any section of the country of essential transportation service, the Mediation Board shall notify the...

...If, however, as provided in section 10 of the RLA, the NMB believes that any such continuing dispute "threaten[s] substantially to interrupt interstate commerce to a degree such as to deprive any section of the country of essential transportation service," it may recommend to the President...