No. 15012. Argued February 8, 1960. Decided March 31, 1960. Mr. Martin F. O'Donoghue, Washington, D.C., with whom Messrs. Thomas X. Dunn and Patrick C. O'Donoghue, Washington, D.C., were on the brief, for petitioners. Mr. Norton J. Come, Deputy Asst. Gen. Counsel, National Labor Relations Board, with whom Messrs. Thomas J. McDermott, Associate Gen. Counsel, National Labor Relations Board, and Marcel Mallet-Prevost, Asst. Gen. Counsel, National Labor Relations Board, were on the brief, for respondent