
    Burroughs et vir, Appellants, v. Allegheny County Port Authority.
    Argued November 12, 1973.
    
      James L. Weisman, with him Thomas A. Trimm, and Friedman, Friedmam & Weisman, for appellants; Leo Daniels, for appellee.
   Order affirmed.

Spaulding, J., absent.  