In Pittsburgh Glass, the Court held that it was not a denial of due process for the Board to refuse to consider evidence relating to the certification issue when petitioner first sought to introduce such evidence at the unfair labor practice hearing.
In Klein v. Herrick (D.C.) 41 F. Supp. 417, 424, the question decided was a party's right to injunctive relief in a situation similar to the case at bar except that the union sought the injunction.