Reasoning that Board's entitlement to enforcement prevents cases from becoming moot because it "adds to existing sanctions that of punishment for contempt"
In Carpenters Union v. Labor Board, 341 U.S. 707, 71 S.Ct. 966, 971, supra, the Supreme Court said: "The use of such pressure on this renovation project was merely a sample of what might be repeated elsewhere if not prohibited. The underlying dispute between petitioners and Watson's has not been shown to have been resolved."
In Pool, the Board and the employer had been negotiating for at least part of those two and a half years, and the court found that "exhaustion of negotiation techniques before a decree is requested may consume many months after the Board's order and before such techniques fail."