
    No. 672.
    National Labor Relations Board v. District 50, United Mine Workers of America, et al.
    
      Solicitor General Rankin, Theophil C. Kammholt, Stephen Leonard, Dominick L. Manoli and Frederick U. Reel for petitioner. Cramp-
      
      ton Harris, Yelverton Cowherd and Alfred D. Treherne for District 50, United Mine Workers of America, respondent.
   United States Court of Appeals for the District of Columbia Circuit. Certiorari granted.  