
    No. 497.
    International Union, United Mine Workers of America, et al. v. National Labor Relations Board.
    
      Welly K. Hopkins, Harrison Combs and M. E. Boiarsky for petitioners. Solicitor General Perlman, David P. Find-ling, Mozart G. Ratner and William J. Avrutis for respondent.
   United States Court of Appeals for the District of Columbia Circuit. Certiorari denied.  