
    No. 330.
    Sheet Metal Workers' International Assn., AFL-CIO, et al. v. National Labor Relations Board.
    
      Donald W. Fisher and Mortimer'Biemer for petitioners. Solicitor General Cox, Stuart Rothman, Dominick L. Manoli and Norton J. Come for respondent.
   United States Court of Appeals for the District of Columbia Circuit. Certiorari denied.  