
    North American Iron & Steel Co., Inc., Plaintiff, v. Isaacson Steel Erectors, Inc., Defendant and Third-Party Plaintiff-Appellant. United States Fidelity & Guaranty Company et al., Third-Party Defendants-Respondents. (And a Fourth-Party Action.)
    Argued January 14, 1972;
    decided March 16, 1972.
    
      
      Julius L. Schapira and Hyman Finkelson for appellant.
    
      John M. Gunneen for respondents.
   no opinion.

Concur: Chief Judge Fuld and Judges Burke, Soileppi, Bergan, Breitel, Jasen and Gibson.  