1934—Act June 21, 1934, inserted “in agreements” after “intended change” in text, struck out provision formerly contained in text concerning changes requested by more than one class, and substituted “Mediation Board” for “Board of Mediation” wherever appearing.

Ex. Ord. No. 9299, eff. Feb. 4, 1943, 8 F.R. 1669, provided procedure with respect to wage and salary adjustments for employees subject to this chapter.