
    No. 470.
    United Mine Workers of America et al. v. National Labor Relations Board.
    
      Welly K. Hopkins and Harrison Combs for petitioners.
    
      Solicitor General Cummings, George J. Bott, David P. Findling, Mozart G. Ratner, Dominick L. Manoli and Margaret M. Farmer for respondent.
   C. A. 6th Cir. Certiorari denied.  