
    United States Steel Corporation (Certified Industries Division), Respondent, v Sigmund Sommer Construction Co., Inc., Appellant, et al., Defendants.
    Argued May 6, 1975;
    decided June 5, 1975
    
      
      Julius L. Schapira, Leonard Shabasson and Max E. Greenberg for appellant.
    
      Morris A. Marks and George E. Netter for respondent.
   Concur: Judges Jasen, Gabrielli, Jones, Wachtler, Fuchsberg and Cooke. Taking no part: Chief Judge Breitel.  